Is Etrecheck safe to use and is this safe place to download? I wanted to check my system and heard about EtreCheck.

1) Is it safe app to use?

2) Is this safe place to download it from?
Yes, Etrecheck is safe to use.

And yes, you should definitely download it from the official website.

Countless people (myself included) have used Etrecheck as a troubleshooting tool. In fact, if you browse Apple's support communities you'll see it often used there as a troubleshooting tool.