Juggling Multiple Businesses Or Stick To One?

I'm looking for some opinions here. For some background, I'm 19M and live in Canada. I've been running businesses since I was 10-11 years old, though until lately they were pretty small scale.

At the moment, I make almost 100% of my income by reselling electronics, but I'm looking to switch to something else. I have a bunch of ideas for online businesses, and I'm actively working on building one. Also, I'm experimenting with dropshipping, and parting out vehicles for some extra side income. I find it's getting a bit chaotic, and I'm weighing a few options here

I could either cut off the experiments, and go all in on reselling again while putting a good bit of time towards launching my business idea, though my ability to scale and get where I want to be with reselling alone is limited. Also, I feel my current business is on borrowed time due to anti-repair tactics from device manufacturers. I'd go all in on the online business when it proves to be viable

I could also spend less time reselling, keep building my online business, and continue experimenting with other businesses until I find something that works

Or should I take this time to learn as many skills as I can (I'm thinking more blue collar stuff - though I'm open to suggestions), and worry about scaling / pivoting later? While still reselling of course

I have $50,000ish in cash, and I'm willing to invest where necessary.

I'm open to any and all feedback. Thanks everybody :)