unable to upload photos from my mac to iclound

Hello Mart2589,

Welcome to Apple Support Communities. 

We understand that some of your photos didn’t upload to iCloud. We are happy to help.

These steps may help. Please try the steps here: Get help with iCloud Photos - Apple Support

"What if some of my photos and videos are missing after I turn on iCloud Shared Photo Library?

If you're missing photos on a device after setting up iCloud Shared Photo Library in iOS 16.1 or later, iPadOS 16.1 or later, or macOS Ventura or later:

• Check which Library view you're in. When you move photos to your Shared Library, you no longer see them in your Personal Library. Learn how to switch between your Personal Library and Shared Library. 
• Make sure that your device is running a supported software version. "

So that we can further isolate the cause. We’d like to have you complete some isolating troubleshooting steps—safe mode and a new user account to test.

Here’s how to start in safe mode: How to use safe mode on your Mac - Apple Support

"Apple silicon

1. Shut down your Mac.
2. Turn on your Mac and continue to press and hold the power button until you see the startup options window.
3. Select your startup disk, then press and hold the Shift key while clicking “Continue in Safe Mode.”
4. Log in to your Mac. You might be asked to log in again.

Intel processor

1. Turn on or restart your Mac, then immediately press and hold the Shift key as your Mac starts up.
2. Release the key when you see the login window, then log in to your Mac. 
3. You might be asked to log in again. On either the first or second login window, you should see ”Safe Boot” in the upper-right corner of the window."

Here’s how to add a new user account to test: Change Users & Groups settings on Mac - Apple Support

"Create a new user or group.

Click the New Account pop-up menu (you may be asked to enter your password), then choose a type of account.

• Administrator: An administrator can add and manage other users, install apps, and change settings. The new user you create when you first set up your Mac is an administrator. Your Mac can have multiple administrators. You can create new ones, and convert standard users to administrators. Don’t set up automatic login for an administrator. If you do, someone could simply restart your Mac and gain access with administrator privileges. To keep your Mac secure, don’t share administrator names and passwords.
• Standard: Standard users are set up by an administrator. Standard users can install apps and change their own settings, but can’t add other users or change other users’ settings.
• Sharing Only: Sharing-only users can access shared files remotely, but can’t log in to the computer or change settings. To give the user permission to access your shared files or screen, you may need to change options in File Sharing, Screen Sharing, or Remote Management settings. See Set up file sharing and Share the screen of another Mac.
• Group: Groups allow multiple users to have the same access privileges. You control a group’s access to your shared folders by setting access permissions in the File Sharing options in Sharing settings.

See Add a user or group."

Let us know if you have further questions.

Take care.