If you’re looking for a dedicated Facebook app on your Windows 10 PC, you have two main options. While there is no longer an official "Facebook for Windows 10" desktop app maintained by Meta (the company that owns Facebook), you can still get a great, app-like experience.
For the best performance, keep Windows 10 updated and clear your browser cache occasionally. If the PWA acts glitchy, simply uninstall it from Settings > Apps and reinstall from the Microsoft Store.
Happy Facebooking on your Windows 10 PC!