Are you recreating them from memory? That's the only way I can see someone having trouble with recreating a loop. Just copy a drum loop in your library or copy the drum patterns from a bunch of hip hop songs until you start getting the idea down. There's plenty of trap songs out there, and drum patterns are not able to be copywritten - so just steal them until you don't have to steal anymore!

Just load up a generic drum sampler and enter in the MIDI notes until your pattern matches theirs exactly. Label the MIDI clip and save it to your personal library. Next time you want a drum loop, just pull that in and make a few minor variations.