1. Get an Android TV device. This is not actually a TV, but a device that connects to your TV via HDMI. Prices vary, but it's not expensive.

2. Install SmartTubeNext on the Android TV. Now you have something better than YouTube Premium: This app supports SponsorBlock, which not only gets rid of YT ads, it also skips filler segments, self-promotion segments and sponsor segments.

3. You can also install a SponsorBlock browser extension.

Both of these are Open Source Software.