This video is interesting because he not only gives an explanation as to how our ancestors would have worshipped, but he also goes through some etymological analysis to show you how certain towns, lakes, rivers, words, etc. in Europe are named after different aspects of their pagan beliefs. For example, Wednesday being Woden's Day (Odin) and various other examples.
Survive The Jive is a great channel for anyone interested in European history, ancestry, and pre-Christian mythology and beliefs:
https://m.youtube.com/watch?v=TlZN8-lwoMQ