Making lf floating window impossible to unfocuss

[aabbccddeeffggj]

Hi, I have the following issue:
When my mouse hovers out of the lf terminal window, the mode changes to "normal mode terminal", thus I have to manually return to the "insert mode terminal".
Also, I mapped to exit lf and also mapped this keybinding to open lf inside neovim, for the sake of toggling lf; when my mouse hovers out of the lf window and I press to toggle off lf, I get an unpleasant error, since I'm not inside lf anymore.
Do you have an idea of how to make it impossible to unfocuss the lf's window? Or a tip to manage a way to toggle lf more consistently?
Thanks for this essential plugin.