When I downloaded that (https://www.minecraft-downloads.com/download/optifine/), my Minecraft gives no feedback. It only works on very old versions. At the end, there's still this message: java tm platform se binary is not responding
The site is also FAKE.
This is the original page:
https://optifine.net/.../downloads
Reinstall we would probably have to do.
Installation is done by execution of the JAR.