Time Frame-MACD and Mfi

Hey


i am learning technical analysis and i am doing pretty well in trading

but most of the time i am confuse wha is best time frame for trading

can any one help he
EOD analysis is very good and also preferable but
still want to know for intraday
so

which time frame is good for- Intraday


MACD

and

MFI



please suggest

THANKS