Finding low budget effective skincare for my goals

Looking to keep a streamlined low budget routine for concerns of pigmentation, first signs of aging (crows feet/fine lines appearing), wrinkle prevention, and hormonal acne on chin and neck.

My skin is combination with both oily and dry, and can be sensitive. I’m about to turn 30.

I have a low budget as I am not working and have no income. I also live in a caravan travelling the country so I have limited storage space and time for extensive routines, as well as spending a lot of time outdoors.

I’m tired of spending money on things that just don’t really work and would love to found some low budget effective products that actually target my issues. I’m happy with my sunscreen but am open to suggestions on most other things.