I love to make snare rolls myself, by filling in steps all the way, like one bar with 4x4 beat snares, next half bar is 8x4 and so on, just fill in the steps when it sounds right.
For lasers or "sweeps", as it's called in my type of genre, I have a generator make a sine in like 250hz, and one in 1k, and the same with whitenoise, so I end up having 4 different 1 sec (or so) long clips of audio, and then fade between them (from the two 1k's to the two 250hz's), as well as automate a huge bell eq to roll down the eq, so that the sounds pitch down from really high pitch to low. Then I bounce them as one, when all automation is complete. Keep in mind that you have to set the levels between the sine sounds and the wn sounds. Then I add lots of reverb, and maybe some tube dist, bounce again, and reverse it
For glitching i prefer dBlue Glitch, a free vst for Windows. It has tape stop, retrigger, gater, crusher, modulator, shuffler, reverser, delay, and stretcher, and you can randomize it so that all of them mixes together and stuff. Great plugin.