Can I reapply for a patent?

After the patent application documents are submitted, they can only be modified within the scope of the original claims. Your so-called "addition" and "deletion" can be used if they are used to narrow or limit the scope of the claim, but not if they are used to expand the scope of the claim. Before the patent application has been published, it is ok to voluntarily withdraw or be regarded as withdrawing the application and then resubmit the application.