What a gaming proxy actually does
A proxy is an intermediary server that relays your game client's traffic, presenting its IP address to the game's matchmaking, storefront or web services instead of your own. For gaming this matters in three concrete ways: it can place your apparent location in a specific country or city for region testing, it can give a build a clean source IP that is not tied to your home connection, and it can keep a single match anchored to one stable IP through a sticky session.
It is important to be precise about scope. A proxy routes the connection you point at it; it does not magically lower your true network distance to a server, and it cannot rewrite how a game's anti-cheat inspects your client. With Budget Proxies you choose the protocol (HTTP, HTTPS or SOCKS5), the country, and whether the IP rotates or stays fixed, then point your client, launcher or test harness at that endpoint.