Is it actually possible to shrink enlarged pores back to their original size?

I'm going crazy with stress because of my pores. As time goes by, they feel like they're sagging vertically, and they look like gaping holes that aren't even covered up well with makeup. People say there's no solution for enlarged pores other than cosmetic procedures, which makes me feel even more depressed. I'm really curious if it's impossible to restore them to their former tight state with just home care. I've tried expensive ampoules and cooling devices that claim to be good for pore reduction, but I don't really feel like they've fundamentally shrunk. I'm even confused about the cause—whether they look big because of a loss of elasticity or because I haven't been managing my sebum properly—so I feel lost on where to even begin with my skincare routine. I'm also hesitant to just try this and that.