Bulk find replace text in layer names

I have been trying to find an effective way to find/replace text in bulk for Figma layer names. I am creating variants and need to change a group of layers label to make them unique.

For example: theme=dark, icon=true

I would like to find all layers where “icon=true” and replace the layer name text with “icon=false”. To be more specific make it so only the layers selected are affects and allow me to choose.

Another feature would to be able to bulk insert/remove text into the layer titles.

The built in Find/Replace in Figma fails to find every layer in the file and all the plugins I have tried are not adequate. I cannot believe I am the only person needing to do this.