Better products

I think the most important point you can improve is adding a daily broad spectrum sunscreen in the AM.

You could also "upgrade" your Vitamin C serum to a product that uses the most effective form - ascorbic acid, you'd need 10-20% concentration for the anti-aging and evening the skin tone benefit (for example, https://whatsinmyjar.com/product/timeless-skin-care-20-vitamin-c-e-ferulic-acid-serum).

I would also switch your moisturizer to a product with niacinamide and maybe ceramides for more effective skin barrier support, for example, this product: https://whatsinmyjar.com/product/dermatica-ultralight-recovery-moisturiser or this: https://whatsinmyjar.com/product/urban-skin-rx-even-tone-barrier-repair-ceramide-cream