>>50959715Generally, you want to look in places with high levels of erosion - old riverbeds, canyons, mountains, and so on. The stuff you find on the surface tends to be in variable condition, but once you find a bone bed, you can dig a bit for the better preserved stuff; in the case of old rivers, you want to figure out what direction they were flowing in and go downstream to choke points, because animals that would fall in and drown would have their bodies carried downstream and be buried in the sediment.
Of course, if you want to skip the actual legwork and just buy some fossils, there are places to do so legally - The Village Silversmith shut down a lot of their physical stores I used to peruse during the Pandemic, but they recently opened up their own website and Etsy store where you can get some of the cheaper stuff:
https://www.villagesilversmith.net/Sadly, the 'good stuff' is only in their few remaining physical stores. Other small trinket shops have things, too, and browsing around random rock shops often leads to some of the best discoveries - I found a Spinosaurus fang for under $30 USD in a small shop near Rockport; usually, they go for around $80, but the owner had no idea what the hell it was he was selling.