Recommendations for retinol products that actually worked for you!?!

Hi~ I'm really worried because my melasma seems to be getting darker lately.

I've heard that retinol products are good, but I'm not sure which ones are best... Could you recommend some products that are effective for melasma and blemishes? It would be even better if you could also tell me the concentration!
I tried retinol once before, but I think it was quite irritating. So this time, I plan to choose carefully. Lately, my dark spots stand out even more when I wear makeup, so it's really stressing me out.
My friend said they use La Roche-Posay; is it any good? Or I heard Dr. Different is decent too... and that SkinCeuticals is a bit pricey but definitely effective...
Since I have sensitive skin, I would like a product that is effective yet gentle. It would be even better if it could get rid of blemishes and have anti-aging effects!
I heard that I should only apply it at night. Is that true? I've been consistently applying sunscreen, but I'm still really worried.
If there is a product that is really effective, I'm thinking of investing in it even if it costs a bit...
I really want to take this opportunity to use a good product!
I'll be waiting for your expert advice~ Please help me solve my problem!!