Looking for qualified datasets from Germany or Switzerland

I am currently looking for qualified datasets from Germany or Switzerland, specifically of individuals who have previously invested in cryptocurrencies, Forex, or other types of investments.
I am also interested in datasets of clients from ING Bank in Germany

Consider sites like hunter.io, Apollo etc. there are great services out there to find the leads you are looking for

Hunter.io is to buy email leads but I need leads mkit phone number and IBAN from the bank where they are