searching through multiple mind maps
I have hundreds of mind maps I've created, especially from notetaking & through research and my knowledge. This ability is extremely important to me. And to do it fast, easily. There are hashtags settings in MM 2022 for individual MMs. How can I search outside a mindmap to provide a list of topics I've hashtagged on a particular topic? All my maps are under one file called "My MindMaps". Is there a way to do this?
Someone said I probably need Trello to add the map in there and add keywords somehow so Trello can do this. I really don't want to buy, learn and use another piece of software -- only if I must.
I'm hoping there is an easy solution.