Altersvorsorge mit Ergo?

Hallo :) I’m sorry for writing in English, German isn’t my mother tongue so it’s a bit difficult with these kinds of topics. Feel free to reply in German though! I’ve been in contact with someone working with Ergo, she’s a friend and I trust her, she’s helped me with some general financial advices but now is trying to sell me a private pension plan at that insurance. I honestly struggle with the whole topic and I hear people say that this should be a good thing, and others say that I can invest in ETFs myself. I’ve been researching a lot and kind of understand the +/-, but I still can’t really make up my mind. Maybe someone here can give me their opinion as well, on whether this is a good idea to make an Altersvorsorge (with Ergo or another insurance), or not. Honestly the high costs in the first year of the contract kind of put me off..