I buy cheap 52mm condoms and I think they are too small for me. When I'm fully erect I cannot unroll them over my dick which is why I put them on when I'm limb or not fully erect and then when I get hard they sit very tight and they actually work. But when I remove the condom later on then I have like an imprint on my shaft from the ring of the condom cause my dick isn't long enough to unroll it completely and because of this there's always a firm ring at the base which consists of the unrolled condom.
I wonder could this damage the penis? Could this be similar to wearing a tight cock ring? Cause cock rings shouldn't be worn longer than 20 minutes or so but when I masturbate with sex toys then I usually have it on much longer than 20 minutes.