gymguydave saidadvice??? what should i do? or is it just be not being able to be a good bottom?
lilTanker already gave you the advice that I would. And it applies to me, too.
The greatest physical pleasure from bottoming comes from sensations in your prostate. Some guys have more sensitive prostates than others, and yours, like mine, may be on the duller end of the scale.
So that you'll never get super pleasure from bottoming, it's just the way you were built, it's not abnormal. It can also help if your top experiments with different positions and insertion depth, to try to be directly stimulating your prostate. It's only a little ways inside your rectum, not 8 inches up there, or else a doctor wouldn't be able to examine it with a finger.
Also, if you're a newbie you may still be experiencing some slight stretching discomfort, which masks the pleasurable sensations from a prostate that may not be especially sensitive to begin with. As you bottom more (and always use lots of lube) most background pain will fade, and the good feelings from your prostate will become more prominent.
Last, as already mentioned, much of the pleasure is in your mind, true for other forms of sex, as well. Make giving him pleasure your pleasure. Thrill to the thought that this lovely guy's dick is inside you, be excited by its mere presence there, whether it feels great or just neutral.
A lot of bottoms don't orgasm that way, so don't use that as your criteria for enjoyment. Let him orgasm while being the top if he likes that, then go on to the things that will make you shoot in your turn.