I made a post a few days ago asking your opinion on Manjaro and it was very mixed, with a slightly negative overall opinion. I heard some recommend EndeavourOS instead and did some online research and it seems to be pretty solid and not have the repository problem that Manjaro has.
Just for context I am a Linux noob and have only used Mint for about the past six months. While I don't have any major complaints, I am looking to explore more distros and the Arch repository with its rolling releases. I am not a huge fan of how certain packages on apt are a few years old and outdated. However, I also don't have the time to be always configuring my OS and just want something that works well out of the box.
I use EndeavourOS and OpenSuse tumbleweed myself, and I'd caution you about using endeavour. It's a great OS that I personally love but there will be manual interventions you'll have to keep track of, and implement. Maybe twice yearly. Like the grub issue, or the repo migration for two recent examples.
OpenSuse tumbleweed however is a rolling release distro that's more stable, takes little in the way of manual interventions, and is quite sleek out of the box. I use it as a work partition for freelance dev work personally.
I love endeavour, but it can take some more babysitting than other distros as it's essentially just a really good graphical arch installer