Remember... Coaches speak to lots of prospective student athletes! Also remember that they will most likely be focused on their current season. Even if you are a top recruit, there is only a certain amount of time that a coach can dedicate to recruiting you. Keep your communication brief. Emails should be short and to the point. Phone calls should only be made when scheduled.
You are representing yourself every time you talk to a coach - whether this is through text, email, or phone call, you want to make sure that you are giving the coach a good impression of who you are as a person.
Here is an example introductory email to a coach (notice how short it is):

Dear Coach Smith,

I'm hoping to begin my student athlete career in the fall of 2022. I have watched some Villanova men's soccer games and I believe the program and the school would be a fantastic fit for me.

My name is Joe Smith and I’m a Center Back at Generic Soccer Club in Philadelphia. I was recently honored by being been named the Gatorade Player of the Year. I believe my work ethic and ability would be a great addition to your program.

I have attached my highlight video to this email.

I will be competing in an Philly tournament near you on March 28th, 2021, with my first game at 3p.m. CT. I would really appreciate it if you would could see me compete in person.

Thank you!

Joe Smith