Astrophotography questions

I am new to the astrophotography world. My camera is a Canon SL2 and I use a Tokina 11-16mm trying to shoot the milky way at 14mm I noticed that my milky way shots do not look remotely close to some of the pictures I have seen from other photographers. While the milky way is visible it seems to be distorted in a way that does not look as bold as some of the pictures I have seen. I do shoot in RAW and my settings are 30"|F2.8|ISO 800. Is there a way to fix this issue in post-processing or in my settings? or is the fact my camera is ASPC has something to do with the way the milky way is showing up?

Thanks
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