Many people have been training for years in a gym and the results may not be there. It is sometimes difficult to find the motivation, to know what to do and how to do it. Each person is unique, so they must receive an adapted training program.
The list of reasons can still be long ...
So do not waste your time, call on a qualified sports coach and give yourself the means to achieve your goals.
Remember: YOU ARE THE CREATOR OF YOUR OWN DESTINY.