Diane, glad to see you around here.
With the advice that could be given here, perhaps you could ask some of the members at your congregation tomorrow if they could help you later in the week? If you're that far removed from smartphones and technology in as a whole, it's generally better to take someone trustworthy with you to perhaps get a phone (perhaps refurbished even, and save a bit) so they can help you set it up, and walk you through it. I don't like Apple products, but some people find them super simple to use. Personally, I use Visible cell service ($25/m with unlimited hotspot), still using a Pixel 7 from 2022 that works just fine.
I pray all is well with you!