My advice would be to register with (very) large watch forums, like e.g. WatchUSeek (WUS), and/or The Watch Forum (TWF). You’ll find all you ever want to know (and much more) there, a veritable wealth of information.

I’ve almost given up on YouTube (YT) reviews: many are just there to attract views, parroting stuff from a watch product page, and reviewing watches that they received from the watchmaker. Not always helpful/insightful/impartial. Stay away from clickbait-titled videos.

Reading watch reviews on respected watch publications can be good, but some suffer from the same issues as many YT reviews. And some were great, but have gone downhill by editorial changes, becoming a sales portal for some brands (thus losing impartiality). Try a few, YMMV.

If an online publication, or YT channel sells watches as an extra revenue stream, you should be warned. Some YT channels are biased in one way or another: see which ones you like best.

Again: register at WUS or TWF, and start searching and reading. Members there can be biased, but there’s discussion, feedback, a real watch community. Online publications and YT reviews are just one man’s opnion, so always read comments, if present.