Expo client is not installing on Simulator

I have been using this setup for almost half a year now and I upgraded the Expo SDK to 44 (erased all content and settings on the simulator). Ever since, the expo client won't install on the simulator.

Things I have tried:

run expo client:install:ios
uninstall and reinstall expo
uninstall and reinstall watchman
tried different simulators (15.0 that I used so far)
creating a new blank expo project
open the simulator first and then npm start
I even did a complete MacBook reset (factory, needed to wipe anyway) and reinstalled following the expo documentation.

I read something about installing expo without sudo, but then it will throw errors and will simply not install.

New blank expo project infos:

Expo : 44.0.0 expo-cli: 5.0.3 react-native: 0.64.3

Hope someone knows the solution to this, I really want to get back programming.

Solution

As @Mercify said, sudo was indeed the problem.

For future reference: if installing expo without sudo throws an error, it is nessecary to change "the owner" of the folder "/usr/.../node_modules" to your user. This post helps changing the owner.

Error: EACCES: permission denied, access '/usr/local/lib/node_modules'

Expo is now installing on the Simulator. Thanks to @Mercify.