@E3L1 , try this:
In terminal type:
sudo nano /usr/share/alsa/alsa.conf
Then Change
defaults.pcm.card to 1
To
defaults.pcm.card to 0
Save, exit, and reboot.

I am a newbie and don't know anything about programming. But I tried to install new Retropie 4.8 on a Armbian Bullseye and I think I could compile almost everything.
I made a Image from the tinker board retropie for anyone who wants to test it or wants to make it better.
I uploaded the image file to my nextcloud. If anyone interested, here is the link:

https://waltikon.mooo.com/index.php/s/3Le33bX2YCZFKFC

I compiled everything, which was to be compiled there. It seems like everything works fine but I can't give any kind of support. If you want to test this image, be my guest. :-)

Isn't this the case for all RPi clones? Lack of software support, lack of community. Thus not very useable straight out-of-the-box.

I (also) learned the hard way: if you don't exactly know what you want to do you with it and know for sure this is already possible, don't buy the board. Especially if you don't want to be the pioneer programming & porting all the stuff yourself.

some n64 and arcade emulation on the Tinkerboard via retropie

and another