Trademark application is not something you can apply for if you want. It also requires professional knowledge and experience. However, the threshold for trademark registration agency is low, and there are many unprofessional agencies doing this. There are many people who charge randomly, and the middle price is not transparent. However, I know there is a company that does not charge agency fees and can handle it directly by myself, called CSI Digital Login. Their platform is called the Gold Master Platform, and you can search for information.