Say something silly, Laugh 'til it hurts, Take a risk, Sing out loud, Rock the boat, Shake things up, Flirt with disaster, Buy something frivolous, Color outside the lines, Cause a scene, Order dessert, Make waves, Get carried away, Have a great day!
I followed this tutorial. https://github.com/MultiMC/MultiMC5/wiki/MultiMC-and-OptiFine
I also followed this one. https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/mods-discussion/2276504-installing-optifine-with-multimc
Nothing works at all. I am trying to use 1.13.2.
Any help would be appreciated, just ask for more details.
Post the crash logs.
Use https://paste.ubuntu.com/