Generally, no. But it could, in some situations, depend on the purpose of your Wireguard VPN. If you are setting it up as a 'server' (inbound connections for accessing your network or tunneling all traffic through your home connection while you are away), it will have zero impact. If you are configuring a 'client' that connects through a commercial VPN service, it is possible your bank may not allow connections that appear to originate form commercial VPN providers.
Depends if you're running as a server or client. A client might slow things down.
Adding a vpn doesn’t typically change the security from hacks like that.
Keeping up to date with security patches on all of your networked devices, using reputable antivirus software, and being very careful about the software you install and the websites you visit will go much further than a vpn ever will.
It is possible it can help, but it could add extra distance that the data needs to travel, and distance equates to ping time increases.
Actually its not mandatory for gaming yes aswell i aint playing alot lately. But i believe im in need for remote access, so using it as server wont slow my internet connection?