About 3 years before my dad passed, my sister suggested to him that switch to Apple and order their latest laptop. I've had been doing his I.T. support for the last 20+ years. So told him he can go ahead and follow her suggestion as long as he calls her when he needs help. I've been working in the field for around 25 years and although I probably could figure out how to fix things, I'd prefer not learn a new operating system because it would help my sister.
I compare computers to cars often. If someone is saying they would like to buy a new car because a specific part is failing, I would make suggestions regarding what car they should buy. I wouldn't send them instructions for wrenching on their car when I know that is never going to happen.
I believe the PC I posted would suit your needs. Though it is an HP. You mentioned getting Dell PC's in the past. I do like Dell PC's, especially for someone that isn't going to 'fix' things. Looks like the equivalent Dell would cost more though.
An equivalent Dell (from Dell) are currently running $849 with a newer CPU, but less memory. I believe it would suit your needs:
https://www.dell.com/en-us/shop/des...TechBargains&dclid=CIaF6IXK85YDFbeupgQdl1gctQ
I'll keep an eye out for a better deal. It mostly depends on how much you're willing to spend and if you definitely want a Dell, or are ok with another brand. None of the links I posted include MS Office. So that would be an add on unless you are able to re-use the license from your old PC.
At this point, it looks like there aren't anymore back to school deals. The next best time to buy would be closer to Christmas.