How do you escape writers block?

I have ideas for writing but I also don’t. Like I want to make little fun short videos on tiktok kind of establishing my character and the world which will then lead to a full blown series that I’ll post on YouTube (like Aphmau’s minecraft RP series if you know. My series will also be Minecraft lol).

I know what I want to do, I just can’t think of anything and anything that would make sense. It’s been like this for so long and it’s driving me crazy. I want to do it, but my head is just empty when it comes to ideas. I feel helpless.