I had a single male platy in my 10 gallon planted tank for a while, and I just recently introduced 4 new male platies to fill out the tank. I did this to avoid any offspring as I wouldn't have nearly enough room for them in the 10 gallon, so I heard getting only male platies could be a good alternative. I learned pretty quickly that the first platy I had in the tank is now a huge bully to all the other new ones that are smaller, and even when I remove him, the other 4 still fight a little amongst themselves. This has been going on for almost a week now, and I don't know what else I can do. They don't seem to have any fin or body damage, and all of them seem to be eating enough during feeding, so I was wondering if anyone could provide some tips on what I could do about this or maybe just some relevant advice, because for all I know it could just be a natural thing with male platies.
Videos: https://streamable.com/0absvm, https://streamable.com/bhxp6o, https://streamable.com/2zpu5r
(In the videos, the big orange one with the long black dorsal fin is the original platy I had. The first link is a video where I took him out and the other 4 platies fought anyway.)