I need help with punctuation mistakes while writing essays
English is my second language, and I chose it as my major at university. The problem is , I still struggle a lot in punctuation placement while writing ,especially commas and periods, and I'll lose marks during exams because of that. I know the most important rules about about commas , like after introductory elements, between items in a list, around extra information, with direct address, and in dates and places. The same goes for periods, but I still make mistakes consistently. I do not know when to use them, especially when I write long sentences i feel stuck not knowing when to put a comma or a period. And I feel ashamed saying this, but sometimes when I write an essay I would show it to chat gpt to correct the punctuation mistakes I have. I have no one else to ask; other students who also have English as a second language are not better than my writing. I tried asking my professor but he's busy most of the time. I also watched many YouTube videos but I feel like I'm not finding the right ones for my problem. So I'd ask gpt, but I'm tired of going that , especially when I write chat gpt corrected version as my final draft. What can I do?
( sorry for the spelling and punctuation mistakes. I'm trying my best🙏)