I have tried both and a bunch of others with a laptop with nVidia and Intel and have had a range of experiences.
Anything Ubuntu based worked out of the box but any significant deviation from the exact current standard made things less stable. Changing WM/DE was not really possible and troubleshooting was opaque. Snap was also a nightmare of broken packages and bad update processes.
Manjaro looked really nice and had that lovely Arch flavour, but it is not really Arch, more Arch adjacent. Lots of things work similarly but lots of things break in bad ways. They have had numerous issues with security, bad updates, and general poor practice.
Pop is cool, I like it, but just not a good fit for me. Cosmic is a great environment but I like to tinker too much and while the team is great and do good work it is just not the same kind of defaults I like.
EndeavourOS is my current pick. It is Arch with sane defaults. It comes prebuilt with a DE configured, backups using BTRFS snapshots, a handy updater and package management config, some cool apps built in, and it is very performant. The guides for hardware video acceleration worked first time for me which has never happened before, normally that is a major pain and takes a few days to get sorted on a fresh install. Graphics performance is awesome, same with built in OOM protection. That said, make sure you have enough RAM. I had 8gb in my laptop and ended upgrading to 32gb after a number of failed builds and messing around with swap to get things to finish. If you have less than 16gb RAM I would recommend upgrading.
Whatever you choose, I would recommend trying a few things before settling down. The right fit is right for today and may change, so try things again in the future if you feel uncomfortable. Also do what works for you, not for anyone else. If you don’t like Arch you are not obligated to use it, same with Ubuntu, Debian, Fedora, etc. Keep the fun of it and play around, maybe just boot up a few live environments and see if something tickles you. I hear good things about Hannah Montana Linux.
First, start big. Get the basic shapes right with large lettering. Ideally you would have something you are comparing to like a stencil or grey printout so you can see the difference between your writing and the target.
After you have the shape fairly good large you can shrink it down. You can take your time getting to that and just make a little progress at a time.
If you find it impossible to shed your current handwriting consider using grid paper to force spacing and maybe try your non-dominant hand.