Honestly, don't play solo. Join a clan or make some friends. It's so much better when you have a team to coordinate with. Also try and use the powerful weapons. Yeah it's shitty to have to use guns you may not love, but winning is fun, dying and losing is not. Try to focus on staying alive instead of rushing in to get kills. Never take a control point solo unless you know the enemy is across the map and you have your super. Also doesn't hurt to do some research into what builds do better and why. Gunslinger is great, but knife juggler is a waster talent point unless you're godly with a throwing knife for instance.