What is the synonym of tried hard?

Here are some synonyms for "tried hard," depending on the specific context:

General:

* Strove

* Exerted oneself

* Put in effort

* Worked diligently

* Labored

* Made every effort

* Went the extra mile

* Did one's best

More formal:

* Endeavored

* Sought diligently

* Applied oneself

* Toiled

More informal:

* Gave it your all

* Went all out

* Pulled out all the stops

* Left it all on the field (figuratively)

The best synonym will depend on the specific context and the desired tone.