Setting default CHARSET and DB Engine
"How can I revert my character set" : 

ALTER TABLE myTable CONVERT TO CHARACTER SET "utf8";


"How can I revert my type": (MySQL Engine): 

ALTER TABLE myTbale ENGINE=MyISAM;


"how can I customize settings when I make new database?"

In your my.cnf

default-storage-engine=MyISAM


Best Regards.

Max.