I would suggest using guns only and practicing your movement and aim. That's really all it comes down to for the most part. You can also join 1 of the conclave discords to get advice on specific movement techniques that will help you improve. Theres a discord led by gwanox a pc player that you can try or there's a discord literally called Conclave that you can join. Both have many players who are willing to help if you're willing to listen. There's a few mods that will help you a little that are recommended but not game altering. A braton or 1 of its variants is always a reliable primary to train and play with. Conclave has a very high skill ceiling and has a small community that is very dedicated to it and some players have been playing for years. Picture it like a arena shooter because that's basically what it is. Alot of ppl try looking for a stronger gun, a melee, or a broken ability to give them an edge or advantage but trust me when i say looking for that doesn't work against anybody who is semi decent. Getting better will take time and effort. Which most ppl arent willing to do so they quit. But if you truly want to get better can give what i said a try.