Can you change my domain name?

my website name is allstarx.net

but i wanna change it.

im the owner of the forum.

My name on the forum is legendrock7

I can provide more details if an admin replies because i dont want to show everyone my email.

Thanks if you can.

Also i bought the domain. I am the original owner. Main owner.

You can delete the domain name yourself & buy a new domain name from the admin panel.

Is it vital that you have to be the founder of the forum in order to do so? My forum's founder has disappeared and left the forum. Is there a way for us to access it to change our domain name?

Please take a look at this.
https://help.forumotion.com/t81878-recovery-or-change-founder-of-an-account

i am the founder of the forum. ALso i dont wanna delete my forum domain becuz i have no more money.

There is no way to change it free of cost.

You need to use money You can't change the domain name without money.