Does it actually need to be portable? If not go with a minipc
Linux
What country/geographic region are you in? I have Canada and US specific sites about what sites and stores are good, what are overpriced.
You should be able to get Linux running on most laptops, whether every feature will work (camera, fingerprint sensor, audio, dedicated video card) can be a crapshoot but I've heard it's gotten better on the software side in recent years, just use Ventoy and distrohop until you find one that works. Trying to use a Nvidia laptop graphics card is a huge pain in the ass, I'll warn you in advance.
Old ThinkPads are a solid choice if you can scrounge one wherever you are.
Hi, I am in the US, Maryland specifically. I don’t care so much about fingerprint sensors, but audio is a must for web surfing. Thanks for the info.
Avoid any machine with an Nvidia graphics card for Linux. It's more hassle than it's worth. Source: my experience.
However, I have good luck with most laptops that have Intel integrated graphics. Specifically Lenovo machines. I am not exactly sure what budget you have, but you can get a second hand Lenovo machine that would work quite well.
If you don't care about it being fully open source/libre, then from my experience you likely won't have much issue with Wifi either.
As far as what you are wanting to use it for, you could get away with something fairly low powered. Depending on your preferences, I would suggest a number of distros for that purpose:
Fedora, it's been a good distro in my experience. They offer different spins of it with different desktop environments. I personally love KDE, but you could go with Gnome too.
As far as hardware goes, if you are unsure about a machine being usable with linux, I would check here: https://linux-hardware.org/
Hope this helps!
I tried my national, online marketplace, but the quality was lacking. In the end, I went for a refurbished laptop. They are often of good quality, cheaper than new (and sometime equivalent) laptops, and have some extra warranty to boot.