Should I go to windows 11?

First of all, you can check Windows 11 eligibility with PC Health Check.

If your system is not eligible for Windows 11, you can enroll for extended updates on Windows 10 using this guide:

https://learn.microsoft.com/en-us/answers/questions/5489827/how-to-enroll-windows-10-in-extended-security-upda

If you get This PC meets Windows 11 requirements with PC Health Check app, then you can use Windows 11 Installation Assistant which you can download from here: 

https://www.microsoft.com/en-us/software-download/windows11

Alternatively, you can try manual upgrade using ISO file. Follow these steps: 

1. Download Windows 11 ISO from Microsoft website.
2. Double click on it to mount it to a DVD drive.
3. Then go to DVD drive, double click on setup.exe to proceed.
4. Follow on-screen instructions to complete upgrade.

Refer detailed instructions in this step-by-step guide: 

https://www.kapilarya.com/how-to-upgrade-windows-10-to-windows-11-using-iso-file 

Let us know if this helps! 

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.