Crafting the perfect pitch deck and including the right content to convince the VCs to invest is a stressful process. There is a lot to think about, you need to ensure you have all the content you need, a solid sorry and narrative that creates connection and deliver it all in an engaging way.
In my experience, your presentation needs to be 10 slides for seed level funding and 16 slides for series A. While every pitch deck needs to be unique to your company, I have found there are some slides that your pitch deck must have at all stages.
You will not go far wrong if you just build these and then fill around them to and more depth where you feel it is needed, and make the narrative flow work better.
Introduction Slides - Your pitch deck needs to start strong and get straight to the point. These slides introduce the VCs to the meat of your presentation very quickly and get them aligned with how you are thinking.
Body Slides - The body slides outline how you are taking the solution and turning it into a business. These slides form the bulk of your presentation and should leave the VCs feeling confident that your product is the solution to the problem, that a market for it exists, and that you are the best to execute it.
Concluding Slides - Asking for the investment at the end is crucial. You want to ensure that the VCs are aligned and hopefully onboard with your narrative before hitting them with the ask.
Following the structure I have outlined, is a great starting place for any pitch deck. However, be flexible as the exact needs of your business and your pitch may be different.