Go compsci if it's something you have passion and the ability to excel in
If you want to work in tech/stem-related generally, go engineering since it's less of a gamble
If you have the time and effort, do a double
If you're able to, you can approach fixing this by compiling exemplar essays and taking note of their sentence structure and while you do so, you'll be able to pick up the vocab which will make your sentences more concise and less complicated in a sense
Personally did something similar to this...
HSC is a game
In times like this, it's a good idea to take a step back and gain perspective
Make sure you're hitting all the dotpoints thoroughly and if that's what you did for your assignment, first see if the feedback is justified, if not contest the mark
You can excel at mx1 as long as you work hard
There's nothing in there that makes it extremely difficult to understand to the extent that it would be better for you to just drop it
It's only the 2nd week so stick with it for a bit and see how it goes, you can drop any time and it'll also make...
Either,
1. Could it be a compsci course? They have their own system
2. Could just show up first week, you don't do much during it and it's more of an info week as far as I've heard