I don't feel the rhythm in my body easily. Am I cursed to be forever like this or what can I do?? I don't have the option to join a marching band like suggested earlier 
This might not be the most apropos or popular suggestion, but you could do worse than to listen to classic Hammond Organ jazz trios.
You could benefit from the knowledge that in the classic style, the organist is playing the bass with the LH, augmented to more or less degrees by the foot work, however rudimentary that might be.
You can copy the organist's basslines by doing what they do. With your foot or a hand: just "tap" and practice it with the recordings or by yourself, giving a periodic "sanity check" with a metronome to see if you're dragging or speeding up over time.
That would be the baseline test: then you might want to work on finer subtleties like exactly where you're striking the keyboard vis-à-vis the beat (slightly ahead, straight on, a bit behind). I wouldn't worry about that for now, since I think you're after basic consistency and "feel" for now.
That's a bit of an off-the-wall suggestion, but it shouldn't be a waste of time, so to speak.
You could also do walking basslines yourself on the piano easily enough, even though I don't think you're a jazz player: it doesn't need much knowledge or mechanical technique, but it's a simple exercise in coordination that shouldn't require much effort from the brain, so you can isolate the feeling of "being in the pocket" and get the connection from time and the hands.
Or, you could just do the same thing by "beating time" in octaves or a single note in LH (or RH) or doing a waltz pattern or whatever you want.
Maybe even just learning the basic conductors' strokes and work with those as well could be fun and fruitful.
Just isolate it, is really what that amounts to. The advantage with listening to and absorbing something like the classic Hammond organ jazz with organ bass is that there are many examples you can easily use as models. Some better than others, but, you know, that's the same as any genre.
And, who knows, maybe you'll benefit in other ways by increasing general musical knowledge or by scrutinizing the interplay between the trap drums and the bassline. Couldn't hurt.