Can many people apply for patents on equipment? So if they apply, are they all infringement? Are they all going to be laid off?

First of all, it is novel; Creativity; Practicality can be patented.

The equipment used by many people has entered the market. This technology has been well known to the general public, and it has lost its novelty in terms of patent application conditions. The applied patent is invalid.

So many people can't apply for patents for the equipment they use.

The patent you applied for is invalid and does not involve infringement.