GFork

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.

Recommended scripts and styles to install here.
CPU Tamer by AnimationFrame - https://greasyfork.org.cn/en/scripts/431573
Simple Age Restriction Bypass - https://greasyfork.org.cn/en/scripts/423851
YouTube search clean-up style - (TBA)
Hide Shorts button / tab - https://userstyles.world/style/4675/

Bonus scripts to install (if you have a sluggish PC).
Hide VP9 support from YouTube - https://greasyfork.org.cn/en/scripts/373685
Disable YouTube 60 FPS (Force 30 FPS) - https://greasyfork.org.cn/en/scripts/23329

To improve performance even more, Just turn off "keep hovering to play" popup. Instructions here.
https://gist.github.com/matter-it-does/bc3acea114ef3962973de54fba57509a