Problem with uptate A-13

I just did the uptate for Android 13, and I never regretted something so much
The UI changed wich is so incredibly upsetting it actually made me cry (I have autism)
And one of the worst thing, is that it took off the letters of the pattern code

How I am supposed to know my PUK and PIN code without the damn letter I don’t remember numbers, I had to pull out the wikipedia page opf telephone keypad to unlock my phone.

Is there any way the old look back ? Or at least get the letter back on the keypad ? Horrible uptate

Thought/question to others:
Would a different Launcher (Nova?) allow customizing unlock patterns/keypads like this?