To begin with, you should decide on the style of your video, and therefore I recommend that you familiarize yourself with this resource https://explain.ninja/blog/5-impressive-product-demo-videos-for-your-marketing-inspiration-in-2021/ . There are examples of demo videos that were used by one or another company. First of all, I recommend watching the Zendesk Sunshine video, and SurveyMonkey. In my opinion, they are just perfect in terms of animation quality. On the same resource, you can find specialists and consult with them. They will help you decide on the idea for your video, and will do everything as efficiently as possible. I say this from personal experience.