Ohhh okay.
Well the basics are
Cleanser - brands like La Roche Posay, Vichy, Inky List, The Ordinary, Cerave are all good high street options. They come in different textures and formats. Lots of people use a balm or oil one (Oat Milk Inky List very good) to remove make up, then a cream, foam, or gel Cleanser to really give a good clean.
Toner - I don't consider this essential but I do like Snail Mucin which is thicker than a toner so more an essence - it's good for adding hydration and giving you some glow
www.boots.com/cosrx-advanced-snail-96-mucin-power-essence-gel-100ml-10280721
Moisturiser - I don't think you need to spend a lot on this personally - I like La Roche Posay, The Ordinary or Glow Recipe.
Spf 50 - in the mornings - this is essential.
Add ons onto this basic routine above would be:
Vitamin C serum used in the morning - The Ordinary is nice for budget or if you want more fancy Medik8 or Oskia do great vitamin C
Exfoliate using a BHA like Paula's Choice.
So in your new routine you would go
Morning
Cleanse
Vitamin C
Moisturise
SPF
Then your makeup
Evening
Cleanse
Exfoliate - 3x per week
Essence
Moisturise
Basically - I think you need to just be consistent if you want to see improvement but start by nailing the basics.