The file string you provided looks like it comes from a third-party download site. When searching for files like this:
Episode 4 is titled "Start Line" . It follows Izuku Midoriya as he takes the U.A. High School Entrance Exam. gateanime-com-mha-04-ardub-1080fhd-mp4
The filename gateanime-com-mha-04-ardub-1080fhd-mp4 refers to (MHA) Episode 4, featuring an Arabic Dub (ArDub) in 1080p Full HD resolution, originally hosted on the GateAnime website. The file string you provided looks like it
If you're accessing unofficial streaming sites, a VPN and an ad-blocker are highly recommended. My Hero Academia [English Dub] 1x4 REACTION!! "Start Line" gateanime-com-mha-04-ardub-1080fhd-mp4
Crunchyroll Arabic provides high-quality Arabic dubs and subs for My Hero Academia.