I wonder if i would be able to use the different personal server for my data .....
Welcome to the ODK forum, @mapunda10! We're glad you're here. When you get a chance, please introduce yourself on this forum thread. Thank you for adding a picture as your avatar because it helps build community!
If you want to self-host, there is documentation on setting up your own Central server: https://docs.getodk.org/central-setup/
The easiest way to get started is by paying for ODK Cloud - it is the official managed hosting service from the creators of ODK. It's the same ODK that millions use, but made even easier so you can focus on collecting the data you need. To help accelerate your work, ODK Cloud comes with priority support and professional services from the ODK team.