Mud is basically unwanted mid to low range frequencies. It makes your track sound bigger, but its not a good thing, because it really hurts your ears. I'd say maybe add some clean subbass if you have not done that (Its just a sine wave pitched down 2 octaves) and maybe use a curve eq to get rid of frequencies around 300-1k hz. In your bass specifically. Everything else is fine. There isn't even that much mud, you just have to clear it up a bit.
it's not bad just too muddy. Concept is cool. Needs lots of mastering work and eq and layering. Flame had great pointers as well so just work on it more
very nice! chonky! If you wanted to up the chonkiness a lil more (and square out some of your sounds in the process) you could see what adding a hard clipper would do (gravity with max ratio, 0 attack, 0 release, and peak analyse). You might also wanna add a bit of noise to sweep through, as that'll let you build up some risers/downers. Overall, you're making leaps and bounds. Keep it up!