I dont got so many jungle champ and mostly playing top/mid
Seriously, not being rude or anything, but don't blame the jungler.
Ofcourse he will be bad? hes at low elo? What did you mean with that the junglers are bad, taht they dont gank? Seriously if you cant win a 1v2 lane (including enemy jungler permaganking you) at 800 elo, then you belong there or even at lower elo. My friend QQ'ed and blamed his teammates like you did, I played on his acc as Tristana, I had 2 afkers in team (support afk and top) so our jungler went top as I asked him kindly to do and we played, I went 11-1 at bot, cant remember the farm, was decent but not as usual since they were graves leona and perm focused me which made graves lose cs so it was fine cuz i got alot of kills.
I won the game later on, 32-2-xx tristana, enemy flamed eachother in all chat and my teammates was like WTF WE WON? and that was the 1st game outta 15~. I won all the games and got him to 1k elo, now hes at 1.1k (getting better)
Also, I carried my brothers acc from 1k (1035~ or something alike) with 200 games played, more amounts of loss ofc, 1 win gave me 12 elo~. Now im at 1.6k~ and I play rarely. Being lucky? Nop, the players are bad, so are the opponents, do as i mentioned above and you will carry all games.
Also the most important thing, Do NOT Flame. Then every teammate will report you and just flame in chat and feed on purpose/play worse cuz they dont focus.
Seriously, that elo is simple. Win your lane > Gank other Lanes > Win
If jungler > Counterjungle early at their red usualy, get their buff and take their red after, enemy team will flame jungler, he will flame them, he will suck cuz he donno what to do in jungle if he dies early and loses buff etc. will be useless as fuck > then go gank enemy lanes > win.