League of Legends (LoL) Question: What's a good KDA generally?

If you are playing a carry role you usually want to play safe and just go on opportunities the other team gives you which can lead to a KDA of even 3 or 4 on average but if your playing like a tank or fighter or you are going for objectives, dont be afraid a KDA of 1 or 2 is always good, especially if some of your deaths came from getting objectives.

I can agree that KDA will NOT win you games, but it is definitely a true reflection of how you consistently play as a champion. The truth is though, a "good" KDA to have is different with every champ. OP.GG is a good resource that shows this information is the most user friendly way, but to break it down...

Some chammps such as Nami, Janna, and Amumu get a MUCH higher KDA on average than other champs. So if Nami is a 3.5 kda average, and you are a 4.0avg or even if you maintain a 3.5kda average with an abnormally high loss rate (she is also a 51% winrate champ), then it means you are playing at an above average level for your rank.

Then other champs who are not tanks or supports like Aatrox and Riven have an average kda of 2.25. If you can consistently get a 3.0kda avg with these champs then that is amazing.

Two final thoughts.
1. These are average scores over multiple games. If you carry a game then you are going to have a kda higher than 8. But you will not carry every game or blowout the other team, and thats just not realistic. So looking longterm if you can maintain your average even though your teams lose more frequently than they should, it means you are on the right track. (I have 35% winrate with Nautilus and a 3.0 kda. Nautilus has a 49% winrate and 2.9 KDA average. This means I perform better than average despite being on losing teams. I can live with this)

2. Every rank is different, but champion stats generally stay the same. So if you are performing the average within your rank, then it usually means as you get better and get promoted you will keep playing on that level with that champ. The only exceptions to this are high mechanic champions like lee sin, vayne, etc.

Hope this was the in depth answer you wanted!

Any KDA is good as long as you win the game. KDA doesn't mean a **** to be honest because all that matters is how you play. If you are just going for kills and assists you are playing the game the wrong way. Other team might be 60 kills behind but have all your turrets down and taken all dragons and stuff.

Well I mean it will vary vastly between leagues. In Diamond, consistently having above a 4.00 KDA is considered quite good.