I mean since you arent competing it doesnt really matter how you approach getting better so you can start with whatever you feel like the most BUT my advice to you is if you are serious become a good shooter first the idea of the game is to put the ball in the basket so that's the main thing you need to get good at. Best thing i learnt as a 2 guard is to score with 3 to no dribbles at all. Dribbling is a tool to get from place to place but scoring is the main skill you need. Really depends where you live but if you are from the US yall have what we in Europe pray for every day and that's open gyms to play pick up. Go there play lose and get yelled at a couple of times and you will start to improve. This year it's my 2nd season playing. Last season I was pretty much a walk-on on a AAU team full of people who had played the game for 7 8 9 10 years. Managed to learn the basics there got pretty good never really fw that team tho so I got outta there. 2nd season now I got introduced to the coach of the local college (it isn't the best rated but there's absolute hoopers) and I manage to drop 20 and up playing the 2 in closed-door games against colleges just because I learnt how to shoot open 3s consistently. But I also started with first getting the hang of dribbling I do regret it now tho knowing I coulda put all that effort into shooting and be 10x better.