I art done! Look great!

I can't seem to find that option anywhere, I'm trying to make PS1 style textures using real images and scaling them down to 256x256 from 2048x2048 to get that pixelated look but it comes out blurry when using these options:

Is there a version of gimp with a better UI like maybe a user made theme or something. These endless text menus that you have to google and try 5 times before you get a half right explanations just so you can make a red square or make the eraser erase instead of doing nothing is so painful. Like I imagine to get into hell you have to make it through an UI like this every day for it to start over different.