I have all the products but no idea how to actually use them properly?!

i feel like over time i just kept buying skincare without really thinking and now i have all these products but no real routine that makes sense, like rn i use a cleanser then toner then niacinamide, sometimes vitamin c but not even sure if im supposed to use it in the morning or night?? then moisturizer and sunscreen

at night i try to use retinol but i get nervous about it so i skip it a lot and then i’ll randomly use an exfoliant some nights but idk if im overdoing it or not, my skin isn’t terrible but it’s just not improving. i still have texture on my cheeks, random small breakouts and it just looks kinda dull no matter what i do, i also dont really understand what shouldnt be mixed together or how often i should be using actives vs just keeping it simple

it honestly feels like im just layering random stuff and hoping something works, how do people actually figure out a routine that makes sense and doesnt just make things worse? helppp!!