My 2022 started remote training with Cressey Sports August before his freshman year. We went to Cressey in person for a full assessment and initial programming. Each month the programming was updated based on two way feedback through the prior month. Initially he did all of the workouts at our local sports club that has a full gym, indoor track, etc...
When COVID hit we went all in on a home based gym. It was a huge financial investment but he has gotten daily use out of it and my 2025 is going to get several years out of it as well so we will eventually break even on the cost vs a gym membership.
You have to have access to the right equipment.
You have to be consistent day to day
You really need an adult willing to monitor your form, spot you, help you chart, etc....until you have some experience.