????

[sand maple]

Its because you altered the geometry for the player model when you made it, so using a texture (yours) that doesn't belong to minecrafts default geometry will ness up the texture

to fix this, you need to create a persona file with your player geometry, new player texture, and the other required files in there and then you can replace minecrafts default persona file with your custom one

no, you should look up how to create a custom persona on minecraft bedrock for your device

id send you an example but im not on my pc atm

[carmine isle]

4d skins aren't supported. That is called a persona and you have to be a partner to publish them. This is so you don't show bad stuff to kids.

If you want to have a different player model then make a Resource pack put it in your global RP packs. Only you can see it in this case which keeps other safe.

[sand maple]

you actually can use custom personas in multi-player areas, such as servers, without being a marketplace partner, as long as the server allows custom personas / doesn't have a certain limit that blocks certain personas

ik you are allowed to use custom personas on servers like The Hive but only to an extent, as there are many factors that won't let the geometry work on the server but if your geometry fits into each category, your model works 👍