Is my computer being hacked?

There's nothing in that log that is "non-Apple".

If you think that either:

• you've installed some software that was not what it claimed to be
• someone has had physical access to your machine and/or knowledge of your admin password

then it is possible that you might have 'malware' on your Mac. You can check whether there is anything of that kind using MalwareBytes, which should also help to remove it.

However, old school "hacking", in the sense of someone remotely pushing something onto your computer (or reading from it, or controlling it) is exceedingly rare, and exactly what the security on your computer is designed to prevent.

If you do fear the worst, then the only course of action is to erase the disk and reinstall the OS. Then restore your data from your backup, but not any apps or Library folders.