I’ve not used LibreWolf, but assuming that Firefox addons are generally compatible, it might be worth trying Chrome Mask. It’s made by a Mozilla employee.
I’ve not used LibreWolf, but assuming that Firefox addons are generally compatible, it might be worth trying Chrome Mask. It’s made by a Mozilla employee.
I don’t know anything about insects and spiders, but maybe some sort of running crab spider, e.g. Philodromus cespitum?