@tijahwriteserotica Hi there welcome!
I read your post something you could consider doing is making shorter 60second videos or less and then add them to create one pin or idea pin - that is how many of us are able to add more video content on a pin.
As a trainer - sometimes I have to do this when making a video for a workout or creating other fitness advice and please note that creating more clips to create one pin or idea pin does not downgrade your content in any way. There are a lot of great apps to consider using when making video content consider @vimeo Canva or Adobe Spark.
I hope that helps you.