This script disables YouTube's new rounded corners (reverts back to the previous layout before 2022 with extra stuff included.)
*Note: If you are using a browser that lacks JavaScript ES10 compatibility, You can get the userstyle version of the NRD here.*
https://userstyles.world/style/11668
Recommended scripts and style to install here:
Anti-Shorts script - https://greasyfork.org/en/scripts/465038
Restore Username from Handle to Custom: https://greasyfork.org/en/scripts/468740
CSS tweaks/fixes for non-rounded design - https://userstyles.world/style/7243
Other script to be installed here (if you use 3rd-party YouTube scripts like SF helper):
Action Buttons Fix - https://greasyfork.org/en/scripts/466532
Also, Make sure you install the legacy version of the Return YouTube Dislike script to see the number of dislikes.
https://pastebin.com/eQHgjEpv
Or even install Return YouTube Dislike addon from here:
https://returnyoutubedislike.com/install
