Your laptop will still be fine for basic use, now that you've upgraded to a SSD and 16GB of RAM. Although for basic usage, 8GB is often more than enough. If you are having performance issues, there are few things you can try, such as uninstalling unused apps. On low end hardware, some antiviruses can cause noticeable slowdowns. If your antivirus is doing that, replacing it with a lighter one would give you better performance. Also, upgrading to Windows 11 which has already been suggested, will typically also lead to better performance. One thing to be aware of though, is that when running Windows 11 on unsupported hardware, the yearly feature updates to new builds of Windows 11, have to downloaded and installed manually. They won't be delivered via Windows Update. But you will get all the regular updates.
Linux has been mentioned and some distros are lighter than Windows. But on your hardware, you should get adequate performance from Windows.
