These are communities to check out for a start (They all have decently active groups on Telegram):

For Germany, Einundzwanzig.
Twitter: https://twitter.com/_einundzwanzig_
Telegram: https://t.me/einundzwanzigpodcast
They have a telegram group dedicated to Berlin as well.

For Netherlands, check out Arnhem Bitcoinstad
Twitter: https://twitter.com/bitcoinstad
Their Telegram: https://t.me/Bitcoinstad

Folks from Connect the World podcast are pretty cool Dutch people to contact as well:
Twitter: https://twitter.com/ctw_podcast
Telegram: https://t.me/connect_the_world

For France, folks from LN Market have a strong community presence.