Stock templates are junk food

Using flashy slide templates might look like an easy way to get a professional presentation. But it’s almost always a bad idea, even if you need a quick, cheap solution.
Templates have several drawbacks. They limit your design, make your presentation look generic, and force you to fit your content into their structure. This can result in a presentation that looks inconsistent or unprofessional. Most importantly, you lose the chance to make a presentation that perfectly fits your message, content, brand, and audience. So, to sum it all up: just don’t use them.