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How can is change the nat typ from my hotspot
You mean the name?
Hi @Tizian, welcome to our forum!
If you want to change the name of the hotspot, the password or the security, you can do so in Settings > Network & Internet > Hotspot & tethering > Portable hotspot > Configure hotspot.
I hope that answers your question! 
No the nat typ
Maybe you should do that on your router.
Is it for gaming?
Hi again @Tizian and sorry that I misunderstood your question!
There is no setting for this in the hotspot settings, so the nat type can't be changed for the hotspot.
As far as I can see, this seems limited to "real" routers and has to be changed in the interface.