Yeah you can use Milanote for character profiles but it being $12 a month isn’t worth it for just that in my opinion! And Wix is good too! You’ll have to figure out how to use their collection database feature if you want it like mines tho.
My best recommendation is Toyhou.se! Very easy to use and it’s free! You’ll need an invite code to join however but finding one shouldn’t be hard! Just ask around! 😄