Divection has a Freediving team that trains every wednesday evening in the De Mirandabad pool.
Cost is 37,50 euro per 3 months. You pay in advance
Single evening: 8 euro, max 8x per year.

You change from 20:30h and do stretching and prepare for the pool dive.
Diving is from 21:00h-22:00h
You train with the people you meet. There is no trainer.
Usually there are some experienced Freedivers (instructors) that can help you with your training.
We have a whatsapp group and members meet up for freediving in Open Water or deep pools like Todi and Dive4life.
Founder of the team is multiple dutch record holder Pete Botman.