I have internet connection but I get the not connecting error in some apps and I can't use the apps

Antivirus software: Apple and Kaspersky

That'll do it. Uninstall the "Kaspersky" garbage in strict accordance with its instructions. Rule 1 of Macs is don't install junk.

This computer has configuration profiles installed.

Find out what they are. Provided you own and control that Mac no Profiles should be installed, in which case its presence should be questioned. Installed Profiles can be found in System Preferences. Identify that Profile; post a screenshot of that pane if need be.

To capture a screenshot read Take screenshots or screen recordings on Mac - Apple Support. To include it in a reply, use the icon just to the right of the "sheet of paper" icon.

By default, screenshots are saved to the Desktop.

I understand. Safe Mode is merely a troubleshooting aid. It helps to know the problem does not occur in that mode. Please restart your Mac normally if you haven't already.

In an effort to further isolate the cause consider Using EtreCheck. Post its report in a reply to this Discussion. Those instructions explain how to do that. Because its output will this site's 5000 character limit for text entry you need to use "sheet of paper" icon below the text entry field.

Please determine if the same problems occur in "Safe Mode": Use safe mode to isolate issues with your Mac.

Needless to say, if you are using, or have used at any time in the past, any non-Apple "anti-virus", "cleaning", or "Internet security" products including "banking security", anything at all in that broad category of utterly useless garbage, don't. A lot of things won't work if you do.

Provided you satisfy yourself that Profile is legitimate and required then leave it installed.

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For more on the subject read Effective defenses against malware and other threats.