Having a rough idea of how portfolio management works would be a good start. Logically, having all of your money in one bank(or asset, or whatever you are used

Having a rough idea of how portfolio management works would be a good start. Logically, having all of your money in one bank(or asset, or whatever you are used to) is not a good idea since you're exposing yourself to a single point of failure(if that one asset/bank fails, you're screwed). You could have for example, 50% of your capital in one bank, 25% in another, 25% in cryptocurrency stables(currencies that keep an almost fixed value) and in this way you're reducing your risk on one side and raising it in other assets. There are entire books about how to manage money and risk that explain in detail some common patterns and things to avoid when managing money. Of course this is not financial advice, we all know that finance is a dangerous world and copying what someone else is doing may not bring you the same results.