Well, I can see why you may be frustrated!A scorpio Ascendant can be intimidating to some. Having Pluto there also gives an extra umph to your intensity and probably blunt persona! The thing about scoprio is that they have to trust you before they can like you sometimes. Would you say this is true for you?
Work wise:
So...on TOP of that, you have planets clustered together in the 3rd house of communication and self-expression. Expressing yourself seems to be of great importance to you--which is probably why you are so frustrated with people's reaction to you.
Also, you 10th house or reputation is also jam packed! So you are also someone who is probably very achievement focused and wants to be "the best" (Not necessarily better than anyone else, but just 'the best")
So, my advice is to really tap into more of the light-hearted and jovial aspects of Leo. Leo wants to "rule" and "express" too! That potential is definitely there! There is definitely some warmth to you of course! Leo can be very kind, protective, and assuring. Scorpio is loyal like Leo as well! I would say to allow yourself to let your original way to speaking/thoughts flow more steadily and without a rush.