Losing it while trying to fill in W4 for second job

This is my second time writing this post because in my frustration of going back and forth from reddit to my first job's paystub page, I closed everything.

I don't know how to fill in a W4. I am confused and I know I'm an idiot but it's driving me insane because I just want money so I can pay bills. That's it.

For context, I have two jobs, the second which I just started like, two weeks ago. My first job is retail, and it goes through Dailypay, which allows me to take money after each shift so I can get food, etc. The hours are extremely varied, and I'm paid minimum wage (like 12 dollars) hourly. The official paychecks are bi-weekly. This recent pay period, I got like, 30 dollars.

This new job that I'm filling in the w4 for has consistent hours and I'm paid more. It's checks are biweekly. When I got hired, they had me do a paper w4, but I was confused and unsure how to even fill it out and the person helping me just told me to figure it out. I even did the irs tax estimate thing and that… only made me more confused.

The paycheck for this pay period at the new job was yesterday, but I got nothing. I looked at the payroll app thing and it says zero dollars went to my bank account and the entire thing was deducted.

I am not married. I have that first job I mentioned but I don't know how to proerly fill that in or what to do. I don't have any tax exemptions. Can somebody explain this to me like I'm five?? I just want to make sure I actually get money for these shifts. That's all I want. My head hurts.