Hello BARIŞ,
I'm John an Independent Advisor and a Microsoft user like you. I understand you're having trouble with Windows search. Did you made any changes on your device? What is your windows version and edition? Press WIN+I then select System then About. Are you using the search for web search results? When is the last time its working?
Run the System File Checker tool (SFC.exe)
Press Start then Search for Command Prompt
Right click and Run as administrator
At the command prompt, type the following command, and then press ENTER:
sfc /scannow
Restore and repair system files
In the search box on the taskbar, type command prompt, then select Command Prompt from the list of results.
Right click and Run as administrator
Type DISM.exe /Online /Cleanup-image /Restorehealth
Restarting Windows Search
Use the Windows key + R keyboard shortcut to open the Run command.
Type the following command and click the OK button:
services.msc
Double-click the Windows Search service.
Click on the General tab.
Use the "Startup type" menu and select the Automatic (Delayed Start) option.
Click the Start button.
Click the Apply button.
Click the OK button.
Please check this article if it helps
https://support.microsoft.com/en-ph/help/452014...
Try to create a new local administrator account then check if everything is working there.
https://support.microsoft.com/en-us/help/402692...
I hope this helps! Please let me know if you have any further concerns.
Sincerely
John DeV
Independent Advisor