Gold 2 to Gold 5, I must be bad.

Been in series to get into gold 1 four times now. And now in the past week or two ive dropped down all the way to 0LP in gold4. Ive only really fed and fucked up a match once in a LONG time and recently had my first experience with actually carrying my team from a loss to a win. I feel I do well in 90% of my matches but end up losing anyway. Has anyone had a losing streak this bad before? Ive lost a rank before but im about to lose 3 and maybe even demote to silver... Why is this happening...