Syntax focuses on the rules of the language and on how the words within sentences fit together making it more understandable and complete to readers. The syntax is very important to determine whether or not the sentence is grammatically correct and be able to correct it if necessary. The people who study syntax observe how the people talk and use syntax, from that they create the rules on how to determine a grammatically correct or incorrect statement. Generally, syntax helps in promoting and easy to understand language.
Maybe you could talk about your day to day life. Or maybe you could write about how the virus has changed your life. I think it would be really cool if you wrote a letter to your future child telling them about what is going on.