Reddit reviews 2019 Newest Lenovo IdeaPad 15.6" HD High Performance Laptop PC |7th Gen AMD A9-9425 Dual-Core 3.10 GHz| 4GB RAM | 128GB SSD | 802.11ac | Bluetooth | DVD+/-RW | HDMI | Win 10

Sounds like you do a lot of carrying around, so I'm going to recommend Chromebooks for how small they are.You can find models for less than $500 easy. Downsides are that you have to jump through some hoops to set up iTunes, and the same sort of business for Steam (if that's what you use for gaming).

After that's done, though, aside from those two points, chromebooks are very easy to own and operate. It uses the internet a lot to store things, and doesn't have a lot of internal storage, so be aware of that, but for your relatively lightweight needs it's a lot of bang for your buck.

$200

$470

If that doesn't sound like your jam, and you want a more "real" laptop, I'd suggest Lenovo brand. They're reliable, robust, and tend to be fairly cheap.

$250

$490, if you select 8Gb and 512Gb respectively (which is what I recommend)

If I order a laptop from a third party seller "fulfilled by Amazon," do I get the manufacturer's warranty? I'm trying to figure this out because the laptop I want should have a one year manufacturer's warranty, but it's only available from third party sellers. This is the laptop: https://www.amazon.com/Lenovo-Performance-Dual-Core-802-11ac-Bluetooth/dp/B07Q147J19/ref=olp_product_details?_encoding=UTF8&me=

Get a cheap laptop.
https://www.amazon.com/Lenovo-Performance-Dual-Core-802-11ac-Bluetooth/dp/B07Q147J19

https://www.amazon.com/dp/B07Q147J19

this one seems good for what you ask, and is ~$250, so a good price imo, good luck!