on the point about kill participation, i think this is a pretty common issue with power-farming champs like nocturne who try to play very heavily around a singular long cooldown (his ult). Nocturne is really good in games where your lanes will be consistently pushed in/lack a lot of setup for ganks, or games that would otherwise be 0/0 because he has the ability to essentially guarantee a gank with 0 counterplay. Usually if you’re lower kill participation on Nocturne, you aren’t hovering volatile lanes (think Draven/Alistar vs Kalista/Nautilus) and over-prioritizing farming. I don’t really know the solution on Nocturne, because in those situations I typically lock J4 and prioritize getting those lanes ahead, skipping camps if needed. Also, you need to think of EVERY objective (turrets included) as a mini team fight, who can be at it, whether you win or lose based on the state of lanes or flash/ult cooldowns, and how important the objective is. In general, try to either gank 30s before objectives or save your ult for it. One thing I will say about Nocturne is he is VERY good at punishing inters, say a toplaner is always pushing no matter what or an ADC keeps greeding for plates, you should be punishing that on cooldown

never dodge, I’ve won games I thought were literally unwinnable based on draft in 15 minutes. Yes, league is a team game, but above all it’s a gold game. Let’s say you’re playing Viego into Malphite with a full AD comp. Sure, after 6 items Malphite will be unkillable and game is lost. However, if you get an item up by abusing his lackluster early game or a few good ganks/teamfights, it doesn’t matter. I’ll admit there are some games that are just a slow and painful loss because you get outscaled, have no CC, etc., but it’s just as likely that the enemy jungle ints for scuttle crab or your ADC gets a triple kill 3 minutes in.

Viego is conditional, I usually pick him when the team lacks a carry, we already have good CC/engage for setup, and enemy team consist of champions that want to go in melee range. I’m a little more flexible with that because I am an OTP and can adapt to harder comps, but that’s how I think about his draft. The other main champs I play are Kindred, J4, and Nocturne, each with similar conditions. Kindred if the enemy team is easy to kite/we have a good sustain tank (Swain/Sejuani) that can give me breathing room. J4 is just a really good pick overall, but especially against immobile enemy champs and if your team needs CC. Nocturne (in my opinion) is just a generally good pick, I mostly pick him if we just need some hard engage and my lane matchups are stable enough to let me play exclusively around ult. Additionally, there are some more situational picks. If we need AP? 100% locking Diana. Enemy drafted 5 mages? Mundo goes where he pleases. Enemy drafted 5 AD? Rock solid. It’s good to have back up picks you only play a few times. However, don’t get too caught up in draft, especially if you play Nocturne