I completely agree that different skins and problems will need different solutions.
I had flawless skin until I was postnatal, when the spots started to appear and didn't stop. Around my mid-late 30s a very strict regime of benzoyl peroxide and jojoba oil cleansing worked for a good while, but then further hormonal changes in my 40s meant that oil cleansing stopped working for me and the acne returned.
I spent tonnes on LRP, Avene, The Ordinary etc and none of it helped. LRP was awful, way too harsh, destroyed my skin for weeks and weeks. I would proceed with extreme caution with LRP. Skin needs to be treated gently.
I now use Waitrose Pure face wash with a soft flannel in the shower in the morning, followed by Superfacialist Vit C serum (really amazing stuff, makes you glow) and Vit C moisturiser.
Evenings I take my makeup off with Nuxe Rose micellar water, then Nuxe Rose face wash with a flannel... and then a good blob of blue Nivea
.
Spots are gone and skin looks fab again, finally.