The only place in where you could invest otherwise than cryptos, could be the real properties, we all know that it is impossible to lose money in there, sooner or later you will get the money back to you.
In my country you will have your ROI in less than 8 years, and then it is all profit.
Eight years sounds like donkey years, don't you think so? The idea that one waits that long is already discouraging to embark on such a business. Besides, your other assumption that nothing makes it impossible to recoup one's money in real estate business is wrong. Remember that nothing is so sure that it can't be doubted.