How to start instagram through a proxy of a specific city?

Question

proxy

Good afternoon! I'm not an expert, but I understand that Instagram starts to bother the owner of the account if he starts flashing in different parts of the world. And I dare to assume that in different parts of the country this is also suspicious, especially with high intensity (the assumption is that Instagram sees the subnet and calculates the city - at least it doesn’t lie when confirmed). So the question is - is it possible to run instagram on iphone through a proxy (not only wi-fi, but also mob internet)? And an additional question - what service allows you to select a proxy for a particular city?