Unless you’re a trained technician, it can be tricky to repair a Macbook by yourself because of the complex ways the materials are screwed to each other. You need specialized tools, and putting the pieces back to where they came from is not exactly a walk in the park. Many people who try end up putting their Macbook in a worse position than it was before.
If your Macbook needs repairs, I suggest bringing it to an official Apple service center. If you’re shopping around for a new laptop, you’d be pleased to know that Apple Macbooks are known for their longevity, especially if you take good care of them. While Macbook repairs can be quite pricey, you can easily prevent needing one in the first place by protecting your device, and a screen protector can help you with that. Check out https://viascreens.com/screen-protectors/apple/ to shop for the best Apple screen protector.