You will need to install a user script manager extension to install this script.
*If you want to use these version of YouTube Web Tweaks script, here is the both of these choices.*
Lite Version (based on the normal script, except it keeps the shorts player) - https://greasyfork.org/en/scripts/466374
These steps are required to tweak here!
Make sure you install an ad blocker extension like uBlock Origin or AdGuard so it will remove ads completely.
Both these scripts are optional to install here after you installed this script.
Disable YouTube AutoPause - https://greasyfork.org/en/scripts/457219
YouTube Super Fast Chat - https://greasyfork.org/en/scripts/469878
Bonus script to install (if users have their older/lower specs machines).
Hide VP9 support for YouTube - https://greasyfork.org/en/scripts/373685
If you want to remove extra annoying popups, you can just copy and paste the code from uBlock Origin here.
To improve more performance, Just turn off "keep hovering to play" popup. Instructions here.