The biggest investment that you need to do for now, is in education if you have not done that already. Educating yourself and your family members enough to get a stable day job will solve some of the biggest mental stress factors out in this world.
After that you can start to decide on how to divide your assets. Depends on your capital you should allocate to fiat and crypto markets. Fiat markets namely stocks, commodities, bonds and metals; crypto should be kept limited to bitcoin. Dont ignore the fiat markets, they often remain green on red crypto days, they are source of clam during the chaos in crypto. After all they are here for a longer time and are already trade-ready compared to bitcoin. Dont be stubborn of getting only bitcoin and this will vary depending on where you are located and what the local laws dictate.
Education used to mean something great, you would get a good job after graduating, and after a few years you would be able to support yourself and if your wife worked as well you would have a decent middle income family household. However, these days people are barely surviving with the current market conditions, you could have a ton of workload, 80 hours a week, your wife could be the same and you would barely afford a vacation.
I have been earning 4 times more than what minimum wage worker earn in my country, and I have been living a medicore life at best. This month has been specially terrible, I paid off some debts, and this caused me to have less than what I normally have, which shows that you could be considered a "rich" person in my nation when you have no debt, that is the ceiling, literally having no debt makes you rich, that is not what we think when we consider rich people normally.