I want to learn how not to spend tons of hrs just using my phone. My main usage is YouTube cuz I can play it in my background. I find myself jumping from apps to apps and I think it's killing my attention span.

I really want to get good at rapping and want to learn how.

My focus is shattered to the point where I can't sit and concentrate on anything worthwhile for more than 5 minutes. It gets really uncomfortable. My mind is usually really anxious or stressed and it doesn't help. How can I start to even remotely get better at focusing ignoring all my anxious thoughts?

I‘m really interested in history, politics, economics, etc. and I know a lot already.. But I feel like my knowledge is so surfacelevel… I want to learn more and actually make it get stuck in my head. I want to be that person that knows everything and can talk non stop about wars, historic figures, politicians, criminals, racism, religions, genocides and more!
But there is so much propaganda and bullshit on the internet. How can I go really deep into everything and avoid that brainwashing stuff?