Do the following
- Update your system, update the arch mirrors sorting by rate or age or some other metric, update EOS mirrors
- Install an alternative Linux kernel, like LTS 6.12.x/6.6.x/6.1.x or hardened Linux LTS 6.12.x/6.6.x/6.1.x or liquirox or something else.
- Install a GUI frontend for pacman like Octopi or Bauh
- Setup a backup schedule for your data.
- Harden the system by setting appropriate kernel parameters and boot parameters
- Install software like SystemdGenie, which is a frontend for systemd services.
- Install arch-audit-gtk
- Go through the guides llike A Complete Idiot’s Guide To Endeavour OS Maintenance / Update / Upgrade and How to run a stress-free EndeavourOS