Thanks for all the feedback.
What I'm probably going to do is 100% real estate in Belgium.
Buying 2 recent apartments for 150K each. Belgium tax is 10% so a total of around 330K.
I'll invest my 100K into this and get a 230K loan at the bank.
Rent out the apartments for around 550-600 € monthly. This will cover the Bank loan, and give me an extra 200 € every month.
After 10-15 years sell the apartments for a profit.
I hope to achieve 7-8% ROI yearly with this.
P.S.:
I don't invest in crypto, since I still think it's a ponzi scheme.
And I also have a retirement savings plan with shares, which didn't do well this year, due to most company shares dropping this year.