curly hair has been matted for a month due to pool activities,thinking of cutting it

My hair used to be down to my mid back, now that its matted, its above my shoulders. In some places its about three or two inches next tomy root, which seems pretty bad.

I have mixed race hair, with both 3a-3c, and i tend to get frizz alot

I understand that my only two options are cutting or detangling, but i'm stumped on which will look better and be better for my hair.

I'm young and have tons of time to experiment with hair, so i guess i could crawl outside of my little introverted shell and maybe go out and be confident with new hair

here's some pictures for reference; https://i.imgur.com/e9Pqqfo.png , https://i.imgur.com/L15MCrw.jpg

I don't have many pictures of my hair, these are the only two i can really find. Some advice would really help!