How Can I Transfer Oracle to MySQL without any Data loss?

I want to transfer my Oracle database to MySQL database, what is the best and easiest method to do it. I have tried one manual method but that doesn't work out. Please provide step by step migration process, I am using Oracle C and want to export data to MySQL. Any tried and trusted Database converter will can also be suggested if all the features are available for free like this tool https://www.filerepairtools.com/oracle-to-mysql-migration.html