What is the best Laptop you can buy? Is Lenovo a good brand? I have a Dell and it has continued to fall apart from the beginning?

I've only had a few Laptops and one of them is a Lenovo… And yes it is good. The School I go to makes everyone get a specific Laptop when they enter, they've been using Lenovos for a while but the year after I entered they switched to dell… Apparently there was a problem with the dells so they switch right back to Lenovo. I don't know what caused them to change their minds but apparently the freshmen were having a lot more problems with their laptops than previous years. The difference was certainly big enough for an entire College to switch back to their previously used brand.

HP or Lenovo

Most of the brands are subcontracted out and procured with only some input from the brand. There's a closer relationship to business lines versus consumer and a relationship to price where all cheap laptops tend to have issues. Lenovo Thinkpads still have a high level of oversight in the design and production. They carry through some characteristics to the cheaper lines. Each report and each year the brand orders seem to shift, and a lot is by how many cheap laptops are sold versus more expensive models.
The dc input jack is a common failure and some Lenovo changed to a better 2 pin design from the spring load single pin. USB ports have usb 3 more reliable than usb 2. Spinning hard drives now fail more than solid state. Metal hinges are better than plastic and look for how sturdy they seem to work if buying in-store. You can check reviews on specific models.

If you browse around the internet about laptop reliability, you will see no consistency at all. It actually does come down to models, and Thinkpads are more expensive but do hold up better. Dell Latitudes in their business line do well. Any cheap laptop is less likely to run without failure. You also should consider most failures today are software related rather than the hardware. Accidental damage also is common.