Hi OP, I use and have used a ton of skincare products, trying new things brings me joy.
How old are you? If you are 30+ I would recommend signing up to Skin+Me or Dermatica and trying a product with tretinoin (a type of retinol). They may include other ingredients in your serum depending on your skin concerns such as a stronger type of niacinamide. It will brighten your skin, minimise wrinkles and improve the texture of your skin. It is also just one product that only has to be supplemented with face wash, moisturiser and sunscreen so you end up with a very simplified skin routine.
I use all of the products your are currently using and I think good quality versions make a difference. IME, cheaper versions make less of a difference.
Vit C - brightens skin and is very good as a moisturiser. I use the Sunday Riley CEO rich cream and it makes my skin look bright and feel lovely.
Niacinamide - strengthens the skin barrier and improves the appearance of pores. I use a Paula’s Choice serum and find it helps my skin to tolerate retinol/tretinoin.
Hylauronic acid - I wouldn’t bother using this as a separate serum. All decent moisturisers contain hylauronic acid these days.
I also use azelaic (sp) acid, lactic acid and double cleanse. Bar a few hyperpigmentation spots that won’t budge, all of the above has given me very good skin in the space of about 6 months.
I have assumed that you are using a sunscreen. If you use active ingredients without sunscreen you will do serious damage to your face. I recommend Ultra Violette SPF50. Korean sunscreens are also very good but can leave a white cast.