I don't know if it's the RNG messing with me when I'm going for a completely uncontested comp, or if I'm just bad at this meta, but ever since last patch I have been getting fisted in most lobbies.
Not really the biggest fan of how AD carries are mostly tied to rageblade either. Feels like if you got locked to an AD comp and you can't find rageblade you are just praying for top 4.

You've got a 60pct top four rate, which is good, and a 10pct win rate, which is just a tad below expectation (12.5pct). 3 top 4s in the last 5 games. What's the complaint?
When playing flex ad without rage blade try vayne 2 + kaisa. ad Kaisa certainly doesn't want it and vayne can make do without. Then those 2 plus frontline or demacia can be pretty solid to top 4 in standard lobbies. Otherwise bilg into mf senna is another good ad line that doesn't need rageblade. Also the senna t-hex builds that have been becoming more common are another great one. There feels like plenty of ad lines that work well without rage blade. Kindred/yunara/draven or the ashes tyrnd build are the only ones where it feels particularly important.
I guess there's also jinx but that unit is so dead in the water that I don't think you should aim for that one most times regardless
Same. My daily journey starts at Plat 2, getting LPs with a few top 4s, getting to Plat 1 and then back to Plat 2 everyday. HELP ME OUT!
I honestly feel your stats aren't that bad. Only reason I say this is because "average" means 4.5. Like my last 20 games I went 5.2 I also feel like I'm struggling this set so I can't help you there but just wanted to throw this out there. Good luck.
You know, you sound like a forcer more than a flexer.
Try kraken.
The thing this set is there are many comps available, so you have to recognize your spot and that's a little harder than usual to many players.
I’ve heard this complaint around rageblade a lot but I don’t understand it. Pretty much every AD on the patch either doesn’t have rageblade as BIS or if they do it’s not nearly the most important part of their BIS. It feels rather like Kraken is the real most important AD item which is less bad because you can almost always get a cloak at some point off a carousel.
EG: Yunara: Kraken and IE are far more important than rageblade, which is replaceable via either second kraken or quicksilver or giant slayer. Vayne (Demacia): BIS is double kraken gunblade. Kindred: rageblade kraken +1 is BIS but she’s fine with just kraken AS item +1. Lucian Senna: BIS is IE Shojin +1. All the fighter comps (Volibear comp, slayers) obviously don’t care about rageblade. Etc…
Rageblade is really overprioritized in low elo, you don’t need infinite AS you just need enough AS after which in all reasonable fight scenarios you’d rather have more dmg from smt like max kraken stacks or a giant slayer or some crit or something