Hi @kye2003 Welcome to the Samsung Community:)
Are you sure you have no Auto Restarts (such as when needed) in Device care.
if not sometimes conflicts with 3rd party apps can cause restarts and if not present in Safe Mode would pinpoint recent 3rd party apps which have been installed. https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/
However you may need to clear the cache partition 1. Turn off the device.
2. Connect To Computer , other Device or TV USB, Press and hold the Volume Up key and then press and hold the Power key
3. When the Android logo displays, release both keys.
4. Wait until the Android system recovery menu options appear.
5. Press the Volume down key several times to highlight wipe cache partition.
6. Press Power key to select.
7. Press the Volume down key to highlight yes, them and press the Power key to select.
8. When the wipe cache partition is complete, Reboot system now is highlighted.
9. Press the Power key to restart the device.
if troubleshooting does not sort it could be a bug with the Beta.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
