How do I get an algorithm once certain event is hit

Hey Guys,
So I am a moderately experienced trader. One thing I have realised that forced trading is of no use. But sitting in front of the terminal puts me to push that button in FOMO and that does make me loose the money.
Then I tried to use streak which also gives me notifications when certain share crosses certain price. I also used it to provide me notifications on MACD cross but it’s too simple and expensive.
Also, it does not work well with forex market.

Is there any platform which can notify me on hitting certain calculated values. I know amibrocker can do anything but it’s too complicated and expensive. Just want notification, I’ll act on it manually.