KK - Should I bet smaller on this river? Are we ahead or behind?

preflop, otf, and ott, everything is ok. You have kings, and you bet them.

otr, it is a bit difficult. The flush draw arrives, the 9 completes a gutshot. But otho, the 9 hits the oesds to a mid pair, and there are other hands that can call. I think, it is a wa/wb situation, and therefore, a calldown would be the correct play.

We dont beat many hands here, that call our shove. I dont really like it. The board hits his limp/calling range actually pretty well. Many flushes and straights did close. Also some 2pairs. Until the river standard value bets. If ur plan OTF was to bet over 3 streets, ignoring a third club, its no mistake at all, because ur blocking some club combos. An ace would have been more scary.

Block bet > x/c > x/f > push. Imo.

I don´t think there are any worse hands that call a river bet however big (small) it is. You should hope for a free shodown. It´s a x/f for me.
I would play OTF&T the same tho - bet-to-protec.

villains are presumably passive limp/call players so i definitely don't want to check/call here.
leaning towards a x/f as this runout is bad and a fuckton of hands improved to 2p+, next option is an optimistic bet (very small?) against some sticky JT kinda hand (we have K:c which helps us a bit here as a blocker). never x/calling

Bet small and fold vs a raise on river. Flush and straight got there, sets are possible... He is calling your big bets for a reason...