When I was 16 I had one small advantage. My father was an electrician/contractor. So I had the opportunity to test the waters in skilled trades. It paid off for me. I'm not sure what the trades are paying for "helpers" but it could be a very good/lucrative (6 figure) future. At 16 you have a full life ahead. Why not check it out now. You never know you might just like it :)

Do you have any skills? For example, one of my teenage relatives fixes broken phone screens for his friends and family. He has made a nice little business out of that.