YouTweaks v1.0

Demo link: https://drive.google.com/file/d/1jpp1Dqvx9ekBpPQrYKB2US2yZYbOI-yG/view?usp=sharing

Chrome / Edge / Brave:

Download the zip file. Unzip the file.
Go to chrome://extensions → enable Developer mode → click Load unpacked → select the unzipped folder.

Firefox: Add to Firefox

Extension isnt approved yet so the link wont work.

To sideload:
Download and unzip the release zip.
Go to about:debugging#/runtime/this-firefox → Load Temporary Add-on… → select manifest.json.