No need to round videos
// ==UserScript==
// @name YouTube No Rounded Video
// @namespace https://yakisova.com
// @version 1.0
// @description No need to round videos
// @author yakisova41
// @match https://www.youtube.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=youtube.com
// @grant GM_addStyle
// @license MIT
// ==/UserScript==
GM_addStyle("ytd-watch-flexy[rounded-player-large][default-layout] #ytd-player.ytd-watch-flexy{border-radius:0;}");