Office programs deleted?

Does anyone know if a reset of my laptop and all Office programs are lost? And what do I have to do to get it back?

Depends on what you have used before and then I can send you the links accordingly

But they cost something? I would have to buy it in theory, right?

If you reinstall win, yes, but that's only necessary in an emergency. Namely, if nothing works anyway. You do not even come to Bios to initiate a restore that preserves all programs and files.

And if you have to, insert and reinstall your Office CD, just like all other programs.

Which office suit (program) did you have?
If that was from Microsoft, then I recommend free alternatives

https://alternativeto.net/software/microsoft-office-suite/

If you reset Windows, the installation is set to factory settings, ie the condition that was present when you bought the device. However, you can decide if you want to keep or delete your data. Then you have to reinstall all programs. If you have saved installation files on your computer, I would like to save them first as a precaution and then reset.