Practical Engineering is also on Nebula (among other some high quality YouTube channels), and tou can get an ad-free yearly sub for around $30. Not giving my views or af-money to Google.
To be fair the topic is very specific. There are not that many big channels that talk about engeneering, esspecially bridge engeneering. At least not that I know of.
if you want an app, revanced is good. it has the same UI of the normal YouTube app (minus whatever you don't want, like ads or shorts or news etc, it's one of the most customizable ones I've seen) and besides adblocking has sponsorblock and return dislike and stuff built in (optional ofc) you can still use new pipe for downloads when you press the in-app download button and I like that feature a lot.
my other suggestion is Firefox + ublock origin. can never go wrong with the classics haha
I have NewPipe, PipePipe, Tubular (newpipe + sponsorblock) and Grayjay all installed. If one fails, i check the others, and if they all fail, i check /c/newpipe
I had to look around for it, but newpipe po-token version is still working for me. It uses some different method of fetching the video, but with the same interface.