[tiplus]

If I got hit by a bus tomorrow - dying in the streets - I would not want to think about how I put 2.2 M$ in my savings account.

To get you started... you could try to think about the cliche "how to be the person selling shovels in the gold rush".

Write an online course on how you parametrized RNNs to predict Bitcoin markets. I got it to work well on predicting a certain low frequency event well with not too much effort. This resulted in 2~3 trade opportunities per day, making only very few $ each trade. So no luck in the gold rush but maybe not a bad shovel to sell?

Switch professions, maybe? 2.2M$ are not uncommon if you can wait a few years... Become a medical doctor and freelance across the country? Enter the middle management in any 200+ B$ company? Marry into a rich family? Low tier drug dealer in Europe (short prison times)? All of the above require working long/stressful hours over years. This brings me back to my first point: forget about the 2.2M and do s.th. you enjoy doing.