export PATH=$PATH:/mypath1:/mypath2 in ~/.profile. Means "add :/mypath1:/mypath2 to what is already in $PATH." If you need the entire system to be aware, set or update it in /etc/environment with PATH=...
You know, in hindsight, you'd have to be an idiot to turn down being Trump's lawyer. Absolutely tons of money, and you'll have no moral worries when you decide to intentionally throw the case.
Btw plastic bottles are also bad for you. BPA was the worst endocrine suppressor of them all but, make no mistake, all plastics are endocrine suppressors. BPA just wound up being the scapegoat. Microplastics in our blood aside, whatever you put into plastic will end up being a vehicle for toxins. While eating/drinking from plastic is really bad, one doesn't usually appreciate the surface area of our skin.
Plastic is only safe for surfaces that we rarely interact with.
I would find this all extremely concerning if China didn't regulate US platforms so heavily. For example, Tiktok has safety limitations for children in China while they have nothing at all for children in the US. It's being used as a social/mental health weapon.
Just remember that daddy allows you access to the propaganda that encourages defending Tiktok.
Finally, your speech has not been limited. You can take it to any of the competitors. There would be free speech concerns for Tiktok, but it's a Chinese company, not protected by the US constitution, and checks notes China proactively limits speech.
Do not use Manjaro. It is a known trap. What you can do is install pamac, which is what Manjaro uses for GUI package management. It's been a hot minute since I've used Arch, so here's a tutorial:
Alternatively you could look at Garuda, which is a solid Arch distro. You'll either love or hate the theme, but that's easy to change. It also comes with an interactive kernel by default (most distros use a regular kernel build, which works better for servers).
Whatever you do, please pleaseplease not Ubuntu. It's the lowest common denominator. Emphasis on "lowest". It was good in the past, but Canonical have really lost the plot.
For your use case, consider it to be a packaging format (like AppImage, Flatpak, Deb, RPM, etc.) that includes all the dependencies (including services, not just libraries) for the app in question.
Should I change this?
If it's not broken don't fix it.
Use Podman (my preferred - the SystemD approach is awesome), containerd, or Incus. Docker is a graveyard of half-finished pet projects that have no reason for existing. Podman has a Docker-compatible socket, so 100% of Docker tooling will work with it.