My Story - OR: What to do with cash from sold real estate

Hi guys! I'm in crypto technically since about 2011 and so normally you'd think I'm already a multiple millionaire, but no, my portfolio is quite modest for that amount of time. To give you the gist of it, I bought 15 BTC with 300€, bought a butterfly labs ASIC with more or less the full amount when it was around 100$ per BTC, it came shitloads of months later and I was able to re-mine just 4 BTC, sold some in the following crash and sit with around 20 currencies at pretty precisely 60k$ today. As said pretty modest. But this was just to kind of introduce myself and the dumbest financial decision of my lifetime (up until now). Now to the actual content of my question:

So completely separate from that we - my wife and I - bought a small house in 2015, without using a single Satoshi of crypto (which up until now we never really did cash in anyway because of that tremendous trauma of selling BTC at 100$..) and bought a new - big one, double the space, plus this time standalone - house this year and have still just today received 75k€ from the bank after paying off the complete mortgage of the old one. The housing prices here in Europe are just so insane at the moment that people offered to buy at near double the price of what the old house was worth in 2015.

So because the house paid well we have a very modest mortgage - even without putting the 75k$ in it and we both have relatively good and stable jobs. Not 10k per month good, but about half (before taxes, so around quarter ;|) so still without paying off the mortgage we have around 1000€ for pure living and even around 1000€ for saving per month. Anyway we figure we are really bad with crypto-decisions, we know that putting this kind of money in crypto is a good idea even medium term, but for us it's still so much money, it's so damn hard to pull the trigger - remember, up until now, our investment in crypto technically is 300€ - putting thousands, even 10s of thousands in it is unheard off for us. So I guess what I'm asking is, would you recommend putting a substantial - if not the whole amount of 75k€ in crypto right now and what currency? I don't follow it much but is there new good news/bad news from regulators? And which coin? I have around 0.85 in BTC which I am holding since a few years now so I'm tending towards ETH which we largely missed out on up until now. Reasons for this being a good/bad idea? And I know this is a "crypto-nut" space so I'm aware people here will be biased towards investment and I too really actually just wanna do it and watch my money grow but I'm also secretly hoping there will be - not too many just 1 or 2 - people who recommend against it with decent argumentation just for the balance :)