Bitcoin chart is going up and down some times I am thinking maybe I should invest part of my BTC (at least the part of the profit Ive made on crypto) into something real?!
Lets say I can buy share of real estate company and get the part of profit (50-100% per Year).
Should I
Spend all my BTC on that shares?
Spend small (profit) part?
Or just do nothing and wait?

?!
Ill do appreciate for answers with any suggestions and recommendations!
If you understand real estate, you should invest in it. You should not risk in the field you do not understand much about it like Crypto.
Investments need a lot of knowledge about how to choose trading platforms, choose the time to buy and many other things. I recommend investing in real estate.