I am unable to open up photos on my Mac and I can't figure out how to fix it

Can you tell us more about your Mac, Molly?

Which system version is installed on your Mac? Did you perhaps just upgrade to a new system version?

What happens, when you try to open Photos? Do you get an error message? If yes, what is the error message?

As a bow drawn at venture -

• if you just upgraded to a new system version and Photos does not open, you may be clicking an old alias in the Dock or on the Desktop. Try to launch Photos by clicking it directly in the Applications folder and do not use the old dock icon.

If that is not the problem, tell us please any error message you are seeing and where you are storing your Photos Library. Is it in the Pictures folder or on an external volume?