I use two pieces of bread board.
One Install raspi pico
Another one installs 1.8" 160x128 ST7789 LCD
Add some buttons
Finally, I modified the code.
Let it operate on this LCD.
Adapted from https://github.com/kilograham/rp2040-doom
Thanks to kilograham for making a huge contribution. He has made a big rewrite of the doom source code so that doom can run on rp2040 (Raspy Pi pico). I just modified it to display it on LCD (ST7789).