Help me do the comma

[Dystopia]

As a non-native I imagine how I would use commas if I was speaking in my native language and it usually works - That being said, I was never good with commas with any language so it's not my strong part (And paragraphs are a pain in the ass).
I'm still not very good at English grammar - If someone tells me to spell a random, more complicated verb tense (like past participle) I may take a while to figure it out. I mostly played videogames and watched movies in English when I was a kid and when I had English classes in school I already knew how to write, speak and spell - I didn't know the grammar, but I could write a complex, well structured text with coherent arguments without any problem. It's kind of an oxymoron, but it's much better than being able to get the whole grammar right (it can be done using your memory) but not being able to have a decent conversation with a foreigner.

I consider my grammar decent/good but I haven't spoken English in real life for a while so my pronunciation/accent probably sucks.