Need Advice

Okay so I’m 19, I’m about to get my second job ever, the last one being when I was 16, so it’s been a good minute. Right now I have an iPhone SE Second Gen with no service, and once I start working I’m wanting to get a newer iPhone and get service on it. I’ll most likely be working fast food because it’s apparently the only people who want to hire in my area. I’m not sure what the pay is going to be yet but I’m looking to see what phone and plans yall might have that are actually affordable. I live with my grandpa who has the shittiest WiFi ever, so my phone barely works anywhere at this point. So what new phone and plan do yall think would be affordable for someone that doesn’t make much and needs an unlimited plan? Let me know please and I’m sorry if this is all over the place lol it’s 1 am and I’m stressed AF. If you need more information ask away. Thank you for reading.