They’re getting longer, more frequent and are generally very intrusive.
So the hack is to use a VPN and set it to ‘Albania’. I have a NordVPN subscription and the chrome plug-in, so it’s very easy to activate on the fly, and it seems to work based on the fact that YouTube doesn’t serve up ads to Albania 
I’m using Tubular, which is a NewPipe branch. Not only I don’t have any YouTube ads, but for the popular videos I don’t have any sponsor blocks, intros, outros etc etc. I watch only meaningful content. It’s much better than when you only eliminate YouTube ads. I can also download video or audio in different formats, bitrate, resolution etc. And the software is free and open source.
I simply use Brave (or Firefox or Chrome with ublock origin.) Bye bye these bastard advertisements.
AdBlockPlus for me. When yt moans at me then I turned ABP off for a few days and suffer the ads then turn it back on again until yt moans again.
Yeah, I switched to Brave quite recently, as Firefox, which I’ve used for years, was starting to disallow ad-blockers from working for youtube. But yeah, it just works.