Find the team(s) with the best coach(es) not the teams with necessarily the best records. Sometimes it is both , but not always. My daughter's first year training with a club coach was with Rampage. She was a year younger than most of the team, so the coach just had her training with the team for the year. Free. That team won state that year. That coach is now the head coach at UCSD. My daughter's first official year in club was at LAFC and the team record was 1-11. She developed the most that one calendar year. Half that team is now going or will be going to D1 schools. That coach is now the 1st assistant at Oregon. After that she joined RSC and played for a few coaches and ended playing ECNL with another fantastic coach. She just finished her last club year and is off to D1 next year. Sometimes my daughter would be the best on her team and that was when I knew it was time to switch teams. It's hard for the lead dog to always stay the sharpest as they set the pace. It was optimum to have my daughter like top 3rd of the team as she is super competitive and would rise as the team grew. Also practicing vs her teammates who are super skilled and competitive, as well as playing vs the best competition. It will take a little work to find that coach/team, but you will. I found our path after my daughter won the AYSO state cup I called UCLA to see if I can pay to have some of the women's players come to my team's practice to train my team. The coach I spoke to was an assistant and that opened the door to Rampage which led to LAFC.
The more time spent playing outside the team structure the better. My daughter and (sons and )I would spend at least an hour a day just playing small sided games 3v3 4v4. Just working on first touch, passing, shooting and fitness. It's great bonding time, and my children loved playing as a family which allowed my daughter to compete against 3 older brothers. Lots of crying when she was younger (6-9), but now she is and has been a beast who is way more physical then most. Futsal is great. She would also play a lot by herself. The best drill I recall her doing is just kicking the ball at the curb and controlling the return (never on the ground to her feet) OR flip the park picnic bench sideways so it can be used like a rebounded or bounce back.. Also drawing up plays and coaching her collection of soccer balls in the backyard with positioning and angles (I don't know how much that helped, but it was part of the package of who she is). She also guested on lots of teams which allowed her to compete with different teammates and getting a different coaching perspective. She played for a coach who played on the Chinese National team/captain. Played for ODP coaches in SD. Played for a team from Alaska. Among others.
Other things I think benefited her development over the years are the obvious ones she had to develop on her own: Love for the game. Passion. Discipline. Having a strong work ethic. Having a favorite professional team. Playing FIFA. Having team friends that she kept over the years that pushes her to stay sharp. I'm proud of how hard she worked. It's a long ride, but sitting her looking back it went really quickly. Best of luck and enjoy the ride.