Sorry for your health; just keep the hope going for your health.
About getting a decent job because of your condition, you can actually stop applying for one and focus on building any little skill that you can afford online; there are a lot of these on the internet now that can actually put food on one's table more than a white collar job.
You investing €20–30 is actually a good beginning; the fund is enough depending on your level of earning. My advice is that you shouldn't just expect a get-rich-quick thing out of what you have been investing for the past couple of months. I will encourage you to hodl just as you have decided to hodl. What's not actually certain here is when those figures you have invested can actually give you your desired profit. Nothing is impossible when it comes to Bitcoin hodling, but price is just not predictable.
Sorry for my english, it is not my native language, but tried my best

For the record, your English is not bad; every average person can read and understand what you wrote correctly. So there's no need for you to apologize over that.