I tried both Manjaro and Endeavour early in my distro hoping days. Endeavor, like others have said, is basically Arch with a good installer and some good defaults, but it is still Arch, which requires you to pay more attention and get more involved in your OS.
Manjaro was kind of an “easier Arch” for me until they pushed an update and black-screened every one of my computers. Twice.
After that, I was done, which is a shame because I rather liked it.
I’m gonna have to go with the one on the left, even though the black level has been lifted a bit. I am looking more at the toolbar across the top and its functionality, which looks easier to use to me.
Doesn’t matter how sleek and shiny something looks if I don’t know how to use it.
I don’t know. I set up a friend of mine who was a complete computer novice with Linux Mint on his laptop well over a year ago and he has not called me for support a single time, where he was regularly calling for help with Windows. People who are afraid of technology usually don’t go randomly clicking on stuff to see what happens. I’m pretty sure that grandma is safe. Plus, if you’re spending HOURS configuring a computer for an elderly person who likely won’t use it very often…you’re doing it wrong.
What I also do is create a complete backup of all of my computers to an external SSD with Rescuezilla on a semi regular basis, so I always have something to fall back to should the entire system or storage device goes belly up. 
I personally don’t store ANY data on any of my laptops. I use Nextcloud and sync the files I want access to on the go. The rest stays on my Nextcloud server at home.
If you are looking for a (mostly) fool-proof backup system that can restore changed settings and files even from a few minutes ago, you want macOS and Apple’s Time Machine. Pull out your wallet and hand it to Tim Apple.
Have to agree with the other replies: this could be any number of things. I’d start with the basics by making sure it’s not a hardware issue, then looking at software. Vostro is Dell’s budget business line, and my experiences with Vostro have been lackluster at best.
That’s not to say it’s purely a hardware issue. I’m a hardware guy so I tend to look at hardware first. Any number of software issues could also be causing your issue, including drivers, driver configuration, data corruption on your storage device, a setting or config from your distro or upstream provider, or even some random utility you installed.
Does it crash under other operating systems? Does it crash only after sitting idle for a certain time? Are you able to open another TTY and use the system from a prompt even though your screen is black?
I’ve been doing PC hardware for over 25 years. This is likely related to your laptop display - either the cable connecting the panel to the motherboard, the panel itself, or some motherboard component connected to the display output that has failed.
Try pivoting the display back and forth and see if the glitches change in response. If they do, it’s the cable.
Beyond that, you’d need to do some testing to find the hardware component that has gone bad.
Do yourself a favor and skip the USB drive - they are ridiculously slow compared to a compact external SSD. I found a cheap m.2 enclosure on Amazon and put an old SSD in it and the speed difference is breathtaking.
My SSD has a bunch of Linux distros grouped into folders along with Windows 10 & 11, every macOS from 10.13 to present, along with Rescuezilla, Hiren’s and a few others I can’t remember at the moment.
Rescuezilla was my #1 go-to during my days of distro hopping. Makes it super easy to try out a distro on bare metal instead of a VM.
Israel can fuck right off. Clearly, “never again” doesn’t mean fuck all to the Israeli government who are doing the same shit the Nazis did, only with bombs instead of gas chambers.
Fuck Israel. The US should have stopped giving them money decades ago.
“Each day for the remainder of the 119th Congress shall not constitute a calendar day”
I mean, what IS “time,” anyway, amirite?