my last game as mid and at the 19min mark everyone on my team dc/screen freezes we all in discord and all on different type of computer my self on a laptop but enemy team did not dc not one and they bam it on on bad computer denying that they DDOS us can they pleases get ban this was just a shit feeling that just killed me and my friend mood for the night of friend playing game if I could link the the game I would but I don't know how but it at the 19 min mark my whole team get dc
Despite that it is likely caused by a bug as said here, I think you mean just DOS. The first 'D' in DDOS, is Distributed. That means a concerted effort by multiple machines used to interrupt service, usually by flooding the target with requests, overwhelming it.
DOS (just Denial of Service) on the other hand applies here.Though it may be a bug, it is still used to deny you and your team the ability to stay connected to the game.
I'm going to guess you had a Jhin on the enemy team last game. If so, it's not a DDoS attack. There's a game breaking bug that causes Jhin to disconnect the entire enemy team when he uses his W in the fog of war.
hmm that a dum bug if so
Banning 
every game now
My enemy team used this bug to their advantage and then when we asked what happened they instantly knew the bug and claimed that they "just googled it" to find out what happened. Acting like they didn't know until they used the bug that is fowl play. How does one "google" the bug seconds after seeing what happened and knowing exactly what the bug is.
