YouTube recommendations are often 30-60% decent and you can always fall back to that. Anything that has tags and similar artist functionality: Last.fm (still technically exists), everynoise.com, more specialized sites like Encyclopedia Metallum. I like to get some recommendations out of band even if I use streaming, otherwise it’s too easy to phase out and make your memory dependent on their algo.

Some (even) more niche and involved methods:

• I am experimenting with using search.marginalia.nu for searching for opinions on forums and personal websites, starting with my “initial” artist, genre or the vibe I’m looking for.
• if you look for an album on ebay or wherever and find a have a small seller with their personal collection, I like to take a listen to some other items from the same person that look promising.
• at least for jazz and probably mainstream pop/rock (? however to call it) there are physical books dedicated to briefly reviewing a ton of albums. I prefer this to typical written reviews because all I need is an album name and some gist of what to expect. If the writer has a long analysis etc. I tend not to agree after listening, I may like some things that they hate and the words have nothing to do with music. Probably the “1000 albums you have to listen to” lists on the internet can serve similar purpose.