Help turning costom rig into playable character

Hello, i had this character made, and i want to know how i can turn it into a playable character, i tried myself but it just isnt working.

I can animte it and stuff, thats all good

here is the explorer, i added a humanoid
image

there has to be a part in the character called “HumanoidRootPart” or it will not work. (it’s case sensitive) try renaming the “RootPart” to that and then see if it works.