I have two big tips that you should try out. the one that's always said but can't be repeated often enough is to always reference another track and AB between that one and yours, because otherwise you're mixing towards an arbitrary goal, so having a reference is the most simple and foolproof way to up the quality of your mixes. The other piece of advice that is about a problem a lot of beginner producers have is that they spent a lot of their time reading and watching videos about how to produce vs. actually doing it. I don't remember who originally said this, but he said that when reflecting on how you spent your 'studio time', you should be aware about if what you're doing is about production or is production. Actually working on music is always going to teach you more than watching videos of people producing, because you're actually doing the skill yourself. Watching baseball on TV isn't going to make you an amazing shortstop on its own, and watching in the studio videos, as much as you can learn from them, isn't a substitution for actually opening up your DAW and mixing down your track, then trying again if it sucks and so on so forth until you've done 1000 mixdowns and start getting somewhere. Hope this helps.