There are several alternatives you can try if Adblock is no longer working effectively against YouTube ads. Here are some suggestions:
1. uBlock Origin: This is a popular ad blocker extension that is known for its efficiency in blocking ads on various websites, including YouTube.
2. AdGuard: AdGuard is another powerful ad blocking software that can help you block ads on YouTube and other websites. It is available as both a browser extension and a standalone application.
3. YouTube Premium: If you don't mind paying a monthly subscription fee, you can opt for YouTube Premium. This service not only removes ads from videos but also offers additional features like offline playback and access to YouTube Originals.
4. Pi-hole: If you want a more comprehensive solution, you can set up Pi-hole on your network. Pi-hole is a network-wide ad blocker that blocks ads for all devices connected to your network, including YouTube ads.
5. Alternate browsers: Some browsers like Brave and Opera come with built-in ad blocking features that can effectively block ads on YouTube.
Remember that while ad blockers can help reduce the number of ads you see on YouTube, they may not be 100% effective at blocking all ads. YouTube constantly updates its ad delivery methods, so it's possible that some ads may still slip through.