You are welcome at churches to attend services and to talk. There is an Orthodox parish in the centre of Amsterdam, with services in Church Slavonic, Dutch and English. It’s address is Lijnbaansgracht 47, please check the website for the schedule of services: https://orthodox-amsterdam.nl/en/ (it is generally closed when there are no services). It has recently moved from the Moscow Patriarchate to the Oecumenical Patriarchate of Constantinople and is attended by people from many countries. Russian and Ukrainian is widely spoken.
There are also two Orthodox communities in Zaandam: the Serbian Orthodox parish of St Nicholas (http://www.pravoslavna-crkva-nl.com) and the Greek Orthodox parish of St Catherine (http://www.orthodoxamsterdam.nl/#/).