Is it worth it to get a 50cc cross marshine with 15

Hello guys I have a question I’ll be on 5.5 16 that’s true for a long time but I’m an enthusiastic fan of moto bikes I’m also already driving 50ccm quads at my home. I wanted to ask if it’s worth a 50cc cross to get so a beta or a derbi, or should I prefer to pick up a scooter and dan 125, I want to do 125 at any time but I’m not so the scooter fan could you brighten me much further PS: Living in NRW