Protect laptop from dirt?

A few months ago I had my laptop re-installed with Windows 10 and also had my old HDD exchanged for an SSD. The whole thing cost me 150 euro and I want to keep the laptop clean and free of unnecessary files and other stuff so that the laptop continues to run as smoothly as it does now. What should / can I do regularly. Are there certain programs that you could recommend me or something like that

No. Always delete everything you don't need.

This is possible with the Windows 10 on-board data carrier data cleanup. I always recommend doing a thorough cleaning. Just read through: https://it-learner.de/windows-festplatte-automatisch-per-script-aufraeumen-und-dabei-speicherplatz-freigeben/

If you use Google Chrome as a web browser, I can recommend this addon: https://chrome.google.com/...ebgnhellfi This cleans up the browser cache of Google Chrome. You can also set it so that when you exit Google Chrome it will be carried out automatically.

For Firefox users there's: https://addons.mozilla.org/...eaner-pro/

You should also use uBlock Origin. This is one of the best ad blockers. This is available as an add-on for Google Chrome and Firefox.

As always, the CCleaner is still recommended to you. In this regard, the hint that you can do without it. The registry cleaner it contains, for example, is completely pointless and may break something. And the majority of the functions offered there already include Windows itself.

I personally would only use Disk Cleanup on Windows and I don't do that myself. Nevertheless, my device runs wonderfully in terms of performance and there's no shortage of memory either.

However, if you want to use disk cleanup from time to time, then take a look at the following article: https://www.drwindows.de/windows-anleitungen-und-faq/15633-erweiterte-datentrgerbereinigung-vista-windows-7-8-10-a.html

If you do not install scrap, the part can't be littered. So you have to take care of it yourself and then it stays clean.

This CC thing is also called snake oil. Objectively it doesn't change anything or breaks anything and gives the user a warm, homely gut feeling.

Thank you.