Who killed my son,when my son Cleveland was wrongfully killed on his motor sykile

Help me to get help from officer's,on the seen after,my son
Cleveland ,hit by a car and killed. Tracy mom wants ,to get justice
For my son. Police won't give the name of a lady ,that killed him,.
Who can call I need help for the person, be put in jail.she is going
Free like it never happened,police said she the lady was wrong.
What can I as his mother Tracy . do ,or call to get justice for cleveland. He died in Arkensaw hot springs may 3,2022.