EA for implementing Trailing Stop loss & LotSize calculation for any crypto pair

I need simple EA implementing the following:

• Trailing stop loss price based on ATR value
• Reward-Risk ration of value 2.0
• Calculate Take Profit Price
• Calculate correct LotSize for the order
• Order Execution on MA crossover
• Order Modification based on Trailing Stop Loss price

inputs should be:

• ATR period
• ATR multiplier
• Reward-Risk-Ratio