This is a piece of simple advice but had a lot of meaning. We are all aiming at the point of how we can improve our family finances, especially during this pandemic. Investing Bitcoin isn't bad if you're not relying alone on this. What I mean is, you must understand how crypto investment works and those failures that might you encounter.

The option of OP's given only GPU mining is the best investment there, you need a capital to start up on that kind of business. But before you proceed into that plan make sure you have to do the math and calculate your earnings versus your capital. There's really no free money on the internet, if there is, it will take time for you to achieve and need a hard task.