My friends and I can connect with my public IP, but I can't connect with my private IP

ok with open NAT and port forward I have many more connections than with moderate NAT.

There is no connection public to public which are not my public Adresses - but there are connections

Public IP to MY public IP and this even if I´m not Host.

As Source IP there is an public IP who is not mine. With moderate NAT I see only my internal connect to external public adresses.

and how can i change my private IP to a public one ?

can i call the company to change it or to add new things on my connection ?

i've heard also about "APN", but the question is how can i change my ISP to a public ?

ok with the new Firmware I can check all connections on my Router.

Normally on my Router is:

IP: 192.168.1.xx on Port 3074 connected to public IP Adress on Port 3074

with open Nat is see it also but I also see some things like that:

public IP on port 65xxx connected to public IP on port 3074

both are not my public IP´s. Does it mean that I host parts of the game even if I´m not the host?

Is this, why moderate NAT is better for me?

All IP addresses are public information, they are not private in anyway.

an IP address can be obtained easily even without this site, it is what you do with the IP address that can be illegal.

When you connect to a party or a P2P game all IPs are broadcast, and this information is not private.

and now I see:

public IP (not mine) source port 61254

pubic IP (also not mine) source port 54720 connect both to my public IP.