I’ve got a problem

I’m new here. I’ve just found this & wanted to ask for advice. So, I have a tonnnnn of photos in my camera roll. I have an iPhone. I have hundreds of photos from Instagram & Reddit. They usually are craft photos (embroidery) & DIY projects for me to make for my classroom. I wish that I could organize my camera roll where I can put them in a specific album and then it doesn’t appear in the “all photos”. I’ve seen many people complain about this issue & there’s no way around it currently. I was wondering if there’s a way where I can upload them somewhere. So that way it’s not taking up so much space in my phone. I don’t think Pinterest is right for me. Any advice?? Thanks in advance!