A thought: what is the best way to spark your passion and motivation for photography is a visual detox. That is, to spend a period of time not looking at any other images but your own.
For example, maybe spend a month not looking at the photos or anyone else, and you only look at your own photos and your past photos. Don’t watch any movies, only read books and literature, and listen to music. No social media, YouTube, or any other visual distractions.