Strong BUY/SELL with BB + RSI + MACD (with alerts)

alertcondition() doesn’t fire alerts by itself — it enables the alert in TradingView’s alert menu.

Once you add this script to a chart, you can go to Alerts → Create Alert → Condition → (your script name).

You’ll see BUY Signal and SELL Signal in the dropdown.

You can then choose notification type: popup, email, SMS, app push, or webhook (for bots)