How do I open it. Will it run on the web?

I beleve I have it working now! THANK YOU SO MUCH! Wouldent have been able to do this without the help :D ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ ░░░░░░░░░░░░░▄▄▄▄▄▄▄░░░░░░░░░ ░░░░░░░░░▄▀▀▀░░░░░░░▀▄░░░░░░░ ░░░░░░░▄▀░░░░░░░░░░░░▀▄░░░░░░ ░░░░░░▄▀░░░░░░░░░░▄▀▀▄▀▄░░░░░ ░░░░▄▀░░░░░░░░░░▄▀░░██▄▀▄░░░░ ░░░▄▀░░▄▀▀▀▄░░...

So how dose one get it faster than lesss than 1 fps...

Thanks soooooooo much it works!
[took me awile though ]

fixed other things
now when I try and download says Minecraft version 1.12.1 not found you need to start the version 1.12.1 manually once

help when I try and run optifine ist says

pi@raspberrypi:~ $ cd ~/Downloads && java -jar OptiFine_1.12.1_HD_U_C5.jar
Error: Unable to access jarfile OptiFine_1.12.1_HD_U_C5.jar
pi@raspberrypi:~/Downloads $

what now? I ran it with launcher open.

[also the speakers were fixed]