I use Safari with Adguard and Chrome with Ublock on macOS and Chrome on Android with AdAway root version, and they work pretty fine for blocking ads, but these videos especially in news sites always autoplay and annoy me a bit, I think they have the same effect as the ads in annoyance level for me.
Do you know of some extensions or workarounds to get rid of them for good?
Ublock Origin has a few ways to do what you want. The most straightforward way is to click on the extension icon, click open dashboard, go to filter lists, scroll to annoyances, and try to enable some or all of those.
Ublock Origin also has a “nuclear” option called disabling JavaScript (extension icon -> JavaScript and reload), which happens to break video playback on just about every modern website :) .
The internet is surprisingly made more usable in a lot of cases when you disable JavaScript. I use Noscript along with Unblock simply because there are less clicks involved to “green light” which cdns/scripts you want to allow through.
This along with a few other niceties like invidious, yt-dlp, sponsorblock, and the duckduckgo lite search engine have made it so I don’t feel distracted, overwhelmed, nor frustrated navigating the web anymore.
uBlock also has the “eyedropper” (idk its proper name) that you can use to pick css blocks on the page and preview what it looks like with that block removed. If you find the block for the content you want to remove, you can save it so that future instances of that block just won’t load in the first place. Works great for embedded chats and those annoying mid-article newsletter sign up flyovers.
I see I expected more ways to achieve this on desktop, but I think this could not be possible on mobile with Chrome?
You could switch to Firefox for Android, which has support for a limited number of Firefox extensions including Ublock Origin, with all of the desktop functionality.
If you really want to stick with a chromium based browser for some reason, you could try kiwi browser (chromium based browser for Android with chrome extension support) combined with Ublock Origin.