I had a few hundred brushes on my Photoshop. But today when I opened photoshop, all the brushes were gone, except for the default ones and the ones from the last set that I imported in. When I last imported that set of brushes, I clearly remember the rest of the brushes still being there as I was using some new and old ones together, so I don't think I clicked "reset brushes". Also, I can't change the hardness of the brushes, except for the default ones. I already started re-importing some of the lost brushes, but it'll take too long to do all of them so I would really appreciate it if someone could help me with this problem.
Did you save them to a folder? If so search for a brush extension and you will probably find them. PS does not delete items on its own.
It's okay now, I just re-loaded each set of brushes. It took a while, as they were all scattered in different folders but I saved them all to one folder now in case this happens again thanks for your reply!