I still don't get it, help me.

Here's the link to my last match and below it is the link to my other post. http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2640538171/234395740?tab=overview https://boards.na.leagueoflegends.com/en/c/gameplay-balance/b3gNaT7K-when-i-dominate-but-we-lose-the-match

I started out 9/0 with about 2 towers taken. I think I had 12 kills and 3 towers before my 1st death. Was able to take 2 inhibitors during 1 back door and recall without dying but my whole team was dead defending 2nd tier turrets and the enemy was at base by the time I got back.

Is my problem simply that I don't group? Should I have joined my team instead of trying to finish the game myself. Is there a way somebody can watch the replay and tell me what I was doing wrong, losing repeatedly while performing well is frustrating. Add emphasis to the fact that my won games are win I feed and play like trash.

Am I just not finishing the matches fast enough. Every team fight I use my Wukong, I'm always sure to take out the marksmen/burst mages 1st.

Do I really just suck that hard?

Been playing this game since late S2, been faithfully using Wukong 5 seasons (all my other mains have seen mass rework and don't play them anymore with the exception of J4).

I've reached low diamond 2 or 3 times, I've managed to stay in mid/high plat for the majority of I think S5 (maybe S6). Rose from B5 to G4 in 1 season. But I always seem to fall back to Bronze.

If I'm playing this game for this long and I still don't get what I'm doing wrong, is it safe to assume I should just accept that I'm going to have a negative W/L ratio and that bronze is for me?