Many users, myself included, have found running MT5 on macOS to be tricky due to compatibility issues. One solution that works well is using Windows via Parallels Desktop on your Mac. This setup tends to be stable, allowing you to focus on your trading strategy without worrying about "no windows would open" type of issues or other technical headaches.
Hope this helps, and good luck!
In case you are keen to use plain macOS - here is a thread where users manage successfully MT5/Mac
https://www.mql5.com/en/forum/ 459758

MT5 Build 4120 MacOS M1-Data Folder Copy Paste Issue
- 2023.12.30
- Gloria Li
- www.mql5.com
Hello Guys! I am happy to install and run the MT5 MacOS (13.4.1) Build 4120 on M1 Macbook Pro successful...

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Hello,
I am having issues opening the Data Folder in my Macbook.
File > Open Data Folder : A beep would sounds and no windows would open.
I installed MT5 on my mom's laptop and was able to open the Data Folder easily.
I'm starting to think it has something to do with Mac's accessibility or security settings.
Any inputs is welcome!
Thanks,
Christian