Skincare Tips?

I used to have a perfect skin care routine, but the face wash I used got discontinued (I'm still mad about it, it was literal GOLD), and then the tretinoin I was using started irritating my skin. I've been trying different stuff for the last two years, and nothing is really helping. I'm having bad breakouts, but that's mostly stress/diet induced (or so I'm pretty sure it is). I mostly struggle with scarring and those tiny little bumps on my forehead. Also, blackheads on my nose (sigh). I tried Medicube products, and they didn't help much. I'm thinking of biting the financial bullet and ordering La Roche Posay stuff when I can. Any advice/ has La Roche Posay worked for anyone?