If English isn't your first language, nuances in the language variations and expressing yourself accurately and clearly are the key difficulties when writing it. There are so many confusing aspects such word order, prepositions, homophones, and loanwords that are likely to cause mistakes.
If you think Microsoft Word or other word processing programs will
catch your errors, you may be surprised at how often the computer does not see certain errors.
For example:
"When people through [sic] garbage on the ground,
it's called littering, and it's a crime."
It might sound right, but it isn't. People throw away garbage, or maybe they walk through it.
"Everyone should be able to life [sic] in a safe place."
No, I'm sorry, life is not a verb.
Some resources to help you write correctly in English