UTG is a standard regular. On mono-tone boards I'm playing pretty passive as not even 77, 22 might have the incentive to raise (and I don't have JJ or J7s here). Since there's no value XR range OTF, there's no need to bluff XR good FDs with SDV.

On the turn I thought that this is a pretty nice bluff spot as UTG will have a hard defeding even hands like AA, AK, KJ here.

On the river I still see him fold hands like AA, top pair with FD or KJ that did not want to give up on the turn yet. Fine play?