189 dollars to my name, something longterm

I am 18 in Sweden, what should I invest in. I understand that taking financial advice from strangers on the internet is not the most reputable source of financial knowledge, but I am trying to widen my perspective. Also, I am using coinbase and can invest an extra 46 dollars every month.

I do not have a job (still searching and studying) but I do get 112 dollars study support from the government every month (46 dollars is absolute max I can invest a homie needs to snus and go out and drink beer with the homies n' shi) . Chosen to invest in crypto because I am born in the US. Here in Sweden if you are a citizen of the US you will get taxed on both Swedish land and US land if you'd invest in stocks, that is why crypto is my second best choice.

I have prior experience to buying cryptos and I am aware that coinbase takes quite large fees, if there are any other websites (that work in the EU) that you could recommend, please share!

Should I invest in one crypto, or in multiple? What does your portfolio look like and how much do you invest on a monthly basis? I am really interested. Any information you could give me, especially sites that you could do plenty of research on the topic of crypto, will be extremely useful.

Thanks!