i've uninstalled and reintalled 3 times, and it is STILL unplayable

the words JAVA EDITION takes up the entire screen, in both creative and survival, unused assets fill the screen, if you open the inventory there are textures that are green and red, the green ones say SEL, and the red ones say UN SEL, Redstone dust has the same inventory icon as TNT and Redstone torches don't effect TNT, and everything is just glitched.