Here’s the navigation
Volume keys: Up is up Down is down
Power button: Enter key
Solution: Navigate to “reboot system now” and if it doesn’t fix try to reset to factory default settings. And if it still don’t work then last resort is to flash a new operating system (only if old os is corrupt.) guide to flash is here (if you REALLY need it, also flashing ersaes all your data as well as factory data reset but you are getting a new os (if you’re not good at it I strongly reccomend to flash a stock ROM.)) Also flashing helps if the recovery screen is frozen or not functioning as intended (Again if you don’t need to flash and you can just get back on track with tw other options I strongly reccomend to follow these methods unless you know what you’re doing.)