Hi Alex, welcome....
My first image was a 30 sec shot of Orion and I was over the moon that I was able to get anything at all. Congrats on your first "proper"
image. Did you match the dark frame length to the lights? I don't take 30 anymore I use 15 now and don't see much difference.
What ISO did you use? I ran my Canon 700D at 800iso most days but sometimes would go to 1600 to bring out some more finer detail. I've never used Sequator so I can't comment on that side of things, most of us here use Deep Sky Stacker ( DSS ). Star Tools is another great image manipulation software and is quite easy to use, again there is a few in the beginner section that use it too, so we can help if you get stuck if you go down that road. It is free to use, though the only thing is you can't save the image in end unless you buy it but you can do a screen shot and post that way.