Hi there
👋 and welcome
Sorry to hear issue you're facing .
First thing to try is to reset WiFi and Bluetooth settings in settings > general management > reset > reset WiFi and Bluetooth settings
Wipe cache partition:
Turn off your phone Plug to PC, tv etc via USB Then press and hold power button and volume up button until samsung logo appears Then quickly release power button and keep holding volume up button until reboot menu appears then navigate with volume down button till wipe cache partition press power button Restart your phone.
Safe mode:
https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/?srslti...