Tenant don’t pay rent. What can be done?

Hi Guys!

Sorry I know this is not the right place to ask this question, but since I could not find it somewhere in this website, you may help me to find a solution or way to get out of the situation.

Have anyone of you faced with a tenant who does not pay the rent and at the same time do not vacate the apartment. I asked my lawyer to follow it up, but from March to now, she just sent letters to my tenant and ask him to leave and the tenant simply does not pay attention. Anyone has a solution or similar experience?

Thank you and Regards.