I started playing this week and was looking at all the skins in the collection tab but when I go to the store, I only see a small portion of them. How do I see the rest of them?

I finally did it. I went from IRON 1 to RADIANT. bottom to the top. I am so happy rn! If u have any questions lmk. due renshuuu#C9WIN is the old account that i started in IRON and C9 KIPPEI#LRizz is the account i hit radiant on!!!!!!! http...