First of all, it depends on the project you are engaged in

Secondly, it depends on which part of your jumping ability is weak, speed or something else.

Secondly, have you been overdrawn recently?

Probably can explain the problem from these aspects.

Please leave me a message if you want to communicate. I have practiced 100 meters before, 18 1 cm, and took off about 80 cm in situ.