My iPhone 6s takes multiple tries to start charging, has this ever happened to anyone and how do you fix it?

I have a 6s and it will always take a lot of tries of plugging my charger in to work. I've tried using a new charger, cable, and outlet. I've also cleaned my charging port but it still takes forever. Any suggestions of what to do?

Time to get the charging port replaced or repaired. Also time to start unplugging the phone, using the port part of the cord and not the cord. This keeps the wires from getting broken or pulled out of the plug itself. Also does not stress the port.