Trust Fund 1041 and K-1

Hi, I'm new to all of this as we have parted ways with our CPA.  I am the sole beneficiary of a trust fund set up when my father passed in 2018. I'm in Louisiana.  What do I do regarding this?  I know there are the 1041 and K-1 forms, and that the K-1 will be used for my personal income tax returns, but what do I do with the 1041 once it's completed?  Do I need to file an actual tax return for the trust, or is the 1041 just a tool to get the K-1 completed?

Thanks in advance.