Well what I usually use is Meshroom, where you simply add your photos and let it reconstruct the object. I haven't had particularly good results with it (likely due to my photography "skills"), but it was good enough for what I needed. You could check out a guide for that since it should be easiest to start with.
I tried meshroom originally, but it was amazingly slow compared to some of the commercial offerings. Searching, I see there is some hidden flag for GPU, so ill see if that helps.
