wanna start by saying if you're interested in making boom bap/beats music/etc (i guess you
could call it "lo-fi hiphop" if u really wanted to), check out Quasimoto's album The Unseen. it'll change your life, really really spacey and head-noddy beats w/ the weirdest but dopest vocals ever. super inventive music and probably the best thing in the style. also listen to literally anything produced by J Dilla, dude was the best fucking producer to ever make hip hop
ok basically the whole genre you're talking about is taking the idea of hip-hop instrumentals a step further by making intentionally warped, woozy, tripped-out loops out of old samples, throwing some crunchy, off-kilter drums into the mix, and building a warm, hazy little universe of sound that u could listen to for hours over and over. so you're gonna wanna sample stuff directly from records or cassettes (or just process sounds you've made thru tape for that extra crunch). you wanna make everything dirty without being muddy. experiment w/ unconventional sounds and processing ideas--the best stuff often sounds saturated to the point of cracking apart, but it's always tasteful enough to hold back from just cranking the knob all the way and letting the distortion go overboard. this "genre" is such a personal, to-each-their-own type thing that it's really hard to slap a label on it and provide a few specific tips on how to make it. try just building a simple groove that doesn't play perfectly on-time, and mess with a few sample chops until you find something that loops
so perfectly that you don't wanna stop listening to it.
mostly i think it's important to keep in mind that the world doesn't need another album full of mediocre loops posted on bandcamp/soundcloud w/ cover art from the simpsons or an anime screenshot lmao. make something inventive out of the idea of lo-fi loops and beats, make something your own, don't be afraid to experiment and make some weird off-kilter shit. the more free-thinking the better!
hope this was helpful in some way

recommended listening:
https://knxwledge.bandcamp.com/album/kauliflowrhttps://sleepyeyes.bandcamp.com/https://mndsgn.bandcamp.com/album/nomapsalso--check this album out because it's a great example of being extremely creative and original with the whole basic hip-hop blueprint. flying lotus is technically making "beats" but this shit is so inventive that it really deserves its own genre. untouchable lol.
https://youtu.be/OPcFtrQfsJw?list=PLmTetWenDEjYdsdAUIDoyTYNLwCXNFgjV