IHAVE PROBLEM IN MY WINDOWS

i m been using this laptop since 2023 and suddenly at 2024 of march , i got issued at transferring data they says 3 messages - "this permission perform this action " " there is not enough space to transfer any data( instead i have enough space)" and another issued was the channel glitch was i want to switch from canary to release preview channel but canary channel was enabled and other channel which i want to switch is disabled by canary channel if neither not updated nor updated the other channels was blocked anyways!..plz reinstall windows without data loss / lose..and 3rd issued was the search bar..i was typing suddenly the search bar crash and again i open it cant let me type and i use task manager to end task..plz find this 3 solution without data loss / lose. if dont know the solution.