Synthetic wigs are gonna tangle easily— especially if they’re very fine. You can probably use hair spray or something to hold it on there a little easier.

I used to exclusively shop on eBay for wigs, there’s a million sellers there and a lot of them are cheap. I usually just search for a description of the wig like “long pink wig with bangs”

this wig is fairly expensive but looks very nice

this one is SUPER cheap so if it’s bad quality you can get another one

this one is lighter but also cute. it seems like the headband is not attached so you don’t have to remove that

this one seems like a really nice quality— it’s got the same tangle issue but it’s a thicker wig which is good

To keep the wig from tangling: maybe proactively use a wig detangler?