Yes,, my many friends using it

Good lock isn't available for a14 5g,, but u can try finelock....

Software upgrade is free.

Bro its a bug in your device software,, I also have s21 fe but there's no problem like u mentioned,, if u want to fix it,, just take a offline and online backup and go to service center and tell them to do software upgrade ,,,,,,Remember software upg...

I'm also using s21 fe and here too the voice focus is missing, maybe it'll be added in one ui 5.1