The only time I'm going to correct your grammar if you haven't explicitly asked me to is if there's some ambiguity and you're saying something important for me to know e.g. making a specific request. Otherwise, if I think I get what you're going for, imo you're doing fine. Talking good is mainly useful as a class indicator.
One thing I think I've noticed among a lot of people who have lived in English-speaking countries for a very long time is that, after their accent reaches general intelligibility and their grammar reaches a point where they're always quickly understood, they stop progressing and leave it at that. I knew an Iranian-American guy in his 50s who had been in the US since his 20s who would drop every article except when it was important.
For your compiler, everything not stated explicitly is ambiguous and potentially important. Talking good may not be necessary for every day conversation, where the stakes are typically low, but you'd go out of your way to avoid grammar mistakes in something important like a legal contract or a published article. Presumably if someone were talking you through modifying your computer and a single wrong move would brick it, you'd ask for clarification should they say anything even remotely weird.
One thing I think I've noticed among a lot of people who have lived in English-speaking countries for a very long time is that, after their accent reaches general intelligibility and their grammar reaches a point where they're always quickly understood, they stop progressing and leave it at that. I knew an Iranian-American guy in his 50s who had been in the US since his 20s who would drop every article except when it was important.