Supertrend + 2 EMAs Indicator with input by Natee L.

What This Script Does:
Supertrend Calculation:

Uses an ATR-based Supertrend with a customizable multiplier and ATR length.
The trend is determined by the direction variable.
Exponential Moving Averages (EMA):

Computes two EMAs: EMA 20 (shorter-term) and EMA 50 (longer-term).
Uses these EMAs to determine trend direction.
Buy and Sell Conditions:

Buy Condition:
Price is above the Supertrend.
EMA 20 is above EMA 50.
Price is above both EMAs.
Sell Condition:
Price is below the Supertrend.
EMA 20 is below EMA 50.
Price is below both EMAs.
Buy/Sell Signal Plots:

Green BUY arrows appear below bars when buy conditions are met.
Red SELL arrows appear above bars when sell conditions are met.