Been there, felt that. Have you tried learning a new technology just for fun? When I got tired of PHP, switched to Ruby and the love and feel of wonder was there. When I got tired of my corporate job tech stack, I looked for a freelance side gig where I now spent most of my time and weekends because the challenge is fun.
Maybe finding a side project you actually like and understand can help.
Maybe finding a side project you actually like and understand can help.