You don't have to be a fitness instructor to participate in bodybuilding competitions. As a fitness instructor, you need to be certified. As long as you get the certificate, you can take part in the competition, just to see your personal interests. If you win the prize in the competition, it's only a bonus for you, and it doesn't decide whether you can be a fitness instructor or not.

In fact, when a fitness instructor requires it from a legal point of view, as long as he is in good health, he has the qualification of a national professional private fitness instructor. And a fitness instructor needs an extrovert who can talk. And you have to be thick-skinned, and you can't give up because of a little setback. This certainly won't last long. After all, when you are a fitness instructor, you have a lot of contacts and need someone to teach you.