How to access Kobold Server on my Windows11 through my iOS device when outside home(not LAN)?

I am able to it when at home and sharing LAN between devices. I do it through remote apps such as Splashtop. I wasnt able to managae to ise the similar app to connect to system while outside home.

BI don't know how to do it when I am outside. Is the any iOS app that can take care of all the diffculty of setting up a server so I can use it to connect to kobold in that specific port?

I am just not heavily techy and I want to find the easiest way to be able to connect to my desktop local llm , using my iphone when i am outside.