Nice, dad. (sorry if i messed up, english is not my first language)

Also non-native speakers are highly unlikely to make the same mistakes as native speakers, when you learn language by seeing it written down and by definition rather than learning by hearing and speaking it yourself you're far less likely to make mistakes like:

then/than("then" is for order of events, "than" is for comparisons)
could've/could of("could've" is short for could have, "could of" is garbage)
there/their/they're("there" is a location, "their" is ownership, "they're" is short for "they are")
too/two/to("too" is comparative, "two" is a number, "to" is for everything else)
paid/payed(paid means money exchanged hands, payed means you used tar to seal gaps in the hull of a wooden boat).

What's much more likely for ESL people is:
violations of the order of adjectives(saying "red big balloon" which sounds wrong to native speakers because in English size comes before colour even though it's hard to explain why)
incorrect tenses("I learned English since I come to the UK" - learned is past tense, but come is present tense)
misuse of pronouns/subjects(especially common in Asian languages where the subject is implied and pronouns are assumed to be carried you can get sentences like "go to supermarket" which is a good instruction and valid English, but can be said to mean "I am going to the supermarket")
incorrect plurality("I have 3 childrens" - children is already plural but because it doesn't fit the same format as other plural words there's a temptation to add an "s" to make it plural)
missing/extra articles("This is my a new house" or "can you pass me pen?")

The funny thing is the latter jump out more when spoken but are much easier to miss when written down because we typically scan ahead and autocorrect them(think the classic "the the" arrangement, your brain saw them both but assumed it'd just read the same part twice and fixed it without you even knowing).

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