“You should get behind the president” – and do what?

A common refrain by Trump supporters to any criticism regarding his handling of COVID-19 is “you need to get behind the president.” OK, and do what specifically?

Should I correct his misinformation, some of which is “actively harmful to Americans” according to John Oliver?

Should I say it was OK to ignore the warnings of the pandemic risk in January and February when we could have done some planning such as needs assessment and alert various parties to better understand roles?

Should I support his and his sycophants’ efforts to heighten just criticism of China and the WHO to the point of disproportionate blame for COVID-19 to mask just blame toward his failures?

Should we say it is OK to push for the public outcry of supporters without accountability to get governors to act more rashly in reopening the economy?

Should we tolerate his abuse of powers toward inspectors general, firing two and discrediting the obvious conclusions in the report of another?

So, please help me understand the kind of support this corrupt and deceitful president needs.