Question Small Assassin Bugs

I was down Emu Bottom , Sunbury the other day (30/3/22) and i saw what looked like Ants with the naked eye under some bark . They were extremely fast and difficult to pick up with tweezers being only 4 to 5 mm long . It wasn't until i put them under the microscope that i realized they were Assassin Bugs . ( 4 photos)

Same thing but red
legs this time , Wombat State Forest (6/4/22) 4 photos.

An Assassin Bug from the Wombat State Forest (18/12/22) 4 photos .