Just a friendly tip, there is a big difference between a ceramic coating and a ceramic spray sealant. Ceramic coatings contain a much higher concentration of SiO2 than ceramic sealants. Actual coatings are much more durable and longer lasting than ceramic spray sealants. But because they are so much more durable, they are not very forgiving if you make a mistake. For example, if you leave the coating solution on too long or if you miss some high spots that you don't buff off, the only way to correct the error is to remove the coating with a DA polisher and start over.
Ceramic-infused sealants, such as the Turtle Wax Ceramic Spray mentioned above, contain much lower concentrations of SiO2 and are much more forgiving compared to coatings. If you apply too much or if you don't remove it at the right time, it is no problem. But they are not nearly as durable as actual coatings.
There are consumer-grade DIY coatings. But the most durable and longest lasting coatings can only be installed by professionals who have the appropriate training and experience.