you welcome.I also learning about speech acts now and thanks you too.
I think I've learned what is meant by speech acts
speech acts are acts that are performed via utterances
for instance, the utterance I'm sorry
is performing the act of apologizing
i hope that you got it
and this site you recommended is really great
en.wikipedia.org/wiki/speech_acts
this theory of speech acts was invented by J. L. Austin
in his book( How to do things with words)