Bullied again in college by former classmates

Ive already posted this on another subreddit but it didn't gain a lot of traction but today I was sitting on a bench in college when two of my old classmates came and sat on the bench opposite to me and they started smirking and giggling without me saying anything.And then they started asking me disingenuous questions.

I was never severely bullied in school but I had poor social skills and people would use that to there advantage by putting me in awkward situations just to get a reaction out of me.

I obviously got so nervous/awkward and they could see that, but I did manage to have a semi conversation. If this happened 2 years ago this would ruin my self esteem/confidence and I would probably be in a bad mood all week, but after this interaction I was barely even bothered, infact I was more annoyed because ive glowed up since school and im still being played with 😑😒

My question is, if this were to happen again how do I handle the situation/make it less awkward and how do I appear more confident in the moment?