Helpz with a Project

I need a hand, I would like to train/make a model to do Sentiment analysis of a context/situation, given a sentence/action.

ex.

Context: There are $0.50 available. You have to choose between two possible actions:
● BOOST THE OTHER PARTICIPANT: In which case, you get 0 cents and the other participant gets $0.50;
● DON’T BOOST THE OTHER PARTICIPANT: In which case, you get $0.50 and the other participant gets 0 cents.

Action: BOOST THE OTHER PARTICIPANT

And I would like from the model a single Sentiment score of this action (but evaluated in the general context).

I have tried various BERT models but they do not satisfy me, perhaps I have simply tried the wrong models.

Advice?

I don’t know much about it, but I think that field is almost exclusively BERT models or their derivatives… Roberta is probably BERT too.