Don't take this the wrong way, But "Connection issues" is just an excuse.
There is no way for RIOT or any one here to know why you "disconnected" in the first place.
So honestly, why are you having connection issue? Bad internet? shared internet? Bad router or modem? Fix those first
League is an online multiplayer game, pretty sure it's common sense to have a decent connection before starting any game or match.
There are sites online you can go to check your ping/connection strength. Not ideal? don't play. simple.
Want to play even though your likely to DC? Play custom or coop vs ai, where it doesn;t matter if you leave or quit. and if DC while in coop, at least the AI will have on champ afk to compensate.
So again, why are you disconnecting? and please don't blame RIOT or the League client, a lot more people are connecting to the game just fine.