Thank you girls!! I guess what bothers me is not that I have a deep laugh, which I don't, but sometimes deep sounds come out of it. I'm trying to make a conscious effort, but usually the laugh comes out quieter and sometimes mute! It's quite weird!!
And yes, I'm definitely trying to get down a little and use a lower-pitched and louder voice, my voice is just naturally high, although I sometimes strain a bit but I'm trying to lose this habit!
As for cough, my cough is high so no real problem there

as for sneezes, IDK why but sometimes I sneeze very loudly and people tell me they weren't expecting it, and others it is really high, so I dunno. When recorded, it is usually different than I thought too.
Thank you again for the input

PS: I'm aware my voice can become quite nasal at times, I'm always congestioned, dunno why ;_;, but yes I do have tendency to get congestion.