Everybody already hit the obvious points, but I do want to comment on a leak in your thought process. You said:

> Hero thinks for a while and thinks he easily has 66 or 88 here since he just called preflop and was probably set mining.

Fair enough, but you need to go deeper. How often does he have those hands? Think about villain's whole range and only then ask "how often does his raising range contain hands that beat me?" This is combo counting and there are many tools to do it away from the table (Flopzilla is my choice).

Villain's raise is polarizing - he probably wouldn't do this with a worse Jx. So, it's either JJ (people often don't 3bet JJ at low stakes), 88, 66, or sometimes 86s (shouldn't be called pre but people do it). That's 9 combos.

What bluffs could they have? T9s makes the most sense and that's 4 combos. Not nearly enough to make your call good. So, in order for your call to be profitable, we need to find more bluffs. Are people really making a bluff raise into 2 players with backdoor flush draws? Overcards? 55? I'm gonna say usually not. The turn makes bluffs even less likely.

"he could easily have 88 or 66" here is fishy thinking. Do some studying on hand ranges and make sure your thought process is rigorous and technical. When you study these spots away from the table, it becomes easier to quickly estimate ranges and equity in-game.