I treat TT like AKs, so raise them up.

22-99 I usually try to limp in any position, calling up to 3x the bb, maybe more if there are alot of callers, giving you better pot odds with your small pp.

On the flop, throw your hand away if there is aggression. With a hand like 99 on a flop of 58T, you might be still good so don't automatically assume a player has a T. From here on it's read based so play carefully. For now you might be better check/folding.