@Hyolobrika
Generally, if i get trolled (and have the energy, always check first if you want to!) i try to think about what that person expects.
Commonly, trolls want to anger you, so it is essential to be kind and positive. Then, twist their try to play with any possible insecurities into a (honest) question about why they do this or if they misunderstood something.
An example would be someone calling you gay, which is usually their own insecurity about the topic. You can be blunt asking them about their insecurity and if they need help, or maybe there is something in the thread where they diverged from the topic discussed - then you can explain the topic and ask if they need clarification.

I repeat because it is important: always check your energy. It's not a good idea to engage if you're exhausted.