How to get certified in personal training and nutrition in Europe

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Hi everyone!

I'm a new member of the forum.
I have been reading threads a lot but it is my first time to write a post.

Recently I moved to Europe and have decided to pursue a career in fitness.
My plan is to get certified and prepare for the muscle mania contest.

I would like to seek your advice in how to prepare to become a fitness professional in Europe.
Could you please share your journey? Here are some questions.

1. What certificate you guys hold?

2. How did you guys prepare? Any course suggestions?

3. What is the most widely acknowledged certification for personal training and nutrition in Europe?

4. I found the fit future program in UK which is quite expensive. I almost thought to do a master degree in sports management or something.

The information on the web is really overwhelming.
I'd love to hear from real people.

Please advise this aspiring fitness professional.

Thanks!!