As you are probably aware, the end of support for Windows 10 happens on October 14th of this year. If your computer can upgrade to Windows 11, then I urge you to do this before then.
If your computer is too old, then you have a decision to make.
Using an unsupported Operating System, means no more security updates for the operating system which is a dangerous place to be. considering that the most recent Microsoft update had patched almost eighty vulnerabilities!
Bowing to consumer pressure, Microsoft has handed out an olive branch to give a free one year extension to this date.
There are two ways to avail yourself of this opportunity.
One is to start allowing your computer to back up your files to Onedrive.
The other way is to redeem one thousand Microsoft points.
To see how many points that you have earned over the years, go to this website and log in with your Microsoft account credentials.
https://rewards.bing.com/

Either way you will need to check the Microsoft update page on your computer, closer to the time and look for the “enrol” link as shown in my screen shot below.
Click the link to enrol in the redemption process.
If you don’t want to do any of this, then your only option is to pay Microsoft USD30 to extend the expiration for a year; or buy a new computer that can run Windows 11. The choice is yours.