diff --git a/src/api/hooks/useTeam.ts b/src/api/hooks/useTeam.ts
index a8593c2..941946d 100644
--- a/src/api/hooks/useTeam.ts
+++ b/src/api/hooks/useTeam.ts
@@ -5,7 +5,7 @@ import {
   useQueryClient,
   UseMutationResult,
 } from "@tanstack/react-query";
-import { AxiosResponse, AxiosError } from "axios";
+import axios, { AxiosResponse, AxiosError } from "axios";
 import { apiClient } from "@/api/instance";
 import {
   Team,
@@ -43,6 +43,21 @@ export const useDeleteTeam = () => {
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ["teams"] });
     },
+    onError: (error) => {
+      console.error("팀 삭제 오류:", error);
+      if (axios.isAxiosError(error) && error.response) {
+        if (error.response.status === 404) {
+          alert("해당 팀을 찾을 수 없습니다.");
+        } else if (error.response.status === 403) {
+          alert("팀 삭제 권한이 없습니다.");
+        } else {
+          alert("팀 삭제 중 오류가 발생했습니다. 다시 시도해 주세요.");
+        }
+      } else {
+        alert("네트워크 오류가 발생했습니다. 인터넷 연결을 확인해 주세요.");
+      }
+    },
+    
   });
 };
 
@@ -54,7 +69,7 @@ export const useLeaveTeam = () => {
     mutationFn: async (teamId: number) => {
       const confirmed = window.confirm("정말로 팀에서 나가시겠습니까?");
       if (!confirmed) {
-        return; // 사용자가 취소를 누른 경우, 요청을 중단
+        return; 
       }
       await apiClient.delete(`/api/teams/${teamId}/leave`);
     },
diff --git a/src/api/hooks/useUserData.ts b/src/api/hooks/useUserData.ts
index 5838009..5b29017 100644
--- a/src/api/hooks/useUserData.ts
+++ b/src/api/hooks/useUserData.ts
@@ -1,6 +1,7 @@
 import { useState, useEffect } from "react";
 import { useNavigate } from "react-router-dom";
 import { apiClient } from "@/api/instance";
+import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
 
 const useUserData = () => {
   const [userData, setUserData] = useState({
@@ -34,7 +35,7 @@ const useUserData = () => {
 
   const handleSubscription = () => {
     apiClient
-      .post("/api/subscription/me/payment", {
+      .post("/api/subscription/me/subscribe", {
         type: "MONTHLY",
       })
       .then(() => {
@@ -43,6 +44,8 @@ const useUserData = () => {
       .catch((error) => console.error("error subscribtion:", error));
   };
 
+
+
   const handleDeleteAccount = () => {
     // 회원 탈퇴 API 호출
     if (window.confirm("정말로 회원 탈퇴를 하시겠습니까?")) {
@@ -52,7 +55,10 @@ const useUserData = () => {
           alert("회원 탈퇴가 완료되었습니다.");
           navigate("/");
         })
-        .catch((error) => console.error("Error deleting account:", error));
+        .catch((error) => {
+          console.error("Error deleting account:", error);
+          alert("회원 탈퇴 중 오류가 발생했습니다. 다시 시도해 주세요.");
+        });
     }
   };
 
diff --git a/src/components/features/CustomCalendar/CustomCalendar.styles.ts b/src/components/features/CustomCalendar/CustomCalendar.styles.ts
index fda8ec8..06238d7 100644
--- a/src/components/features/CustomCalendar/CustomCalendar.styles.ts
+++ b/src/components/features/CustomCalendar/CustomCalendar.styles.ts
@@ -188,6 +188,12 @@ export const eventItemStyles = (status: string, isDragging: boolean) => css`
   `}
 `;
 
+// 제목용
+export const eventItemTitleStyles = css`
+  font-size: 0.9rem; /* 원하는 크기로 조정 */
+  font-weight: bold;
+`;
+
 export const dropdownMenuStyles = css`
   position: absolute;
   top: 100%;
diff --git a/src/components/features/CustomCalendar/CustomCalendar.tsx b/src/components/features/CustomCalendar/CustomCalendar.tsx
index c4417fb..b7dc370 100644
--- a/src/components/features/CustomCalendar/CustomCalendar.tsx
+++ b/src/components/features/CustomCalendar/CustomCalendar.tsx
@@ -23,6 +23,7 @@ import {
   eventItemStyles,
   dropdownItemStyles,
   dropdownMenuStyles,
+  eventItemTitleStyles,
 } from "./CustomCalendar.styles";
 import useDeletePlan from "@/api/hooks/useDeletePlan";
 import Modal from "@/components/common/Modal/Modal";
@@ -97,9 +98,10 @@ const VIEW_MODES = {
 
 const calculateEventStatus = (event: CalendarEvent) => {
   const now = new Date();
+  const nowKST = new Date(now.getTime() + (9 * 60 * 60 * 1000));
   if (event.isCompleted) return "completed";
-  if (event.start > now) return "upcoming";
-  if (!event.isCompleted && event.end < now) return "incomplete";
+  if (event.start > nowKST) return "upcoming";
+  if (!event.isCompleted && event.end < nowKST) return "incomplete";
   return "incomplete";
 };
 
@@ -308,7 +310,7 @@ const EventContent = ({
         style={{ position: "relative", cursor: "pointer" }}
       >
         <div>{timeText}</div>
-        <div>{event.title}</div>
+        <div css={eventItemTitleStyles}>{event.title}</div>
       </div>
       {isDropdownOpen && createPortal(DropdownMenu, document.body)}
     </>
diff --git a/src/pages/Friend/FriendPage.tsx b/src/pages/Friend/FriendPage.tsx
index a816d95..fd34496 100644
--- a/src/pages/Friend/FriendPage.tsx
+++ b/src/pages/Friend/FriendPage.tsx
@@ -142,18 +142,24 @@ const SearchButton = styled.span`
 `;
 
 const FriendListContainer = styled.div`
+  grid-template-columns: 1fr 1fr;
   width: 100%;
-  display: grid;
-  gap: 16px;
-  box-sizing: border-box;
-  grid-template-columns: 1fr;
-
-  @media (min-width: ${breakpoints.lg}px) {
-    grid-template-columns: 1fr 1fr;
+    display: grid;
+    box-sizing: border-box;
+    gap:16px;
+  ${breakpoints.tablet} {
+    grid-template-columns: 1fr;
+    width: 100%;
+    display: grid;
+    box-sizing: border-box;
   }
 
   ${breakpoints.mobile} {
     gap: 12px;
+    width: 100%;
+    display: grid;
+    box-sizing: border-box;
+    grid-template-columns: 1fr;
   }
 `;
 
diff --git a/src/pages/Landing/LandingPage.tsx b/src/pages/Landing/LandingPage.tsx
index c7584c4..09ccb6e 100644
--- a/src/pages/Landing/LandingPage.tsx
+++ b/src/pages/Landing/LandingPage.tsx
@@ -191,8 +191,9 @@ const Card = styled(motion.div)`
   flex-direction: column;
 
   @media (min-width: 768px) {
-    width: 70%;
+    width: 100%;
     padding: 2rem;
+    
   }
 `;