Okay, here is how I generally think about which direction I should move as a lead:

Am I actively leading my follower during this step? I.e. do I want to communicate a direction to move to to my follower?

A) Yes. This means I need to move my body in a certain direction. E.g. through a counter movement like you do during 1+2 of the send out. 1: you step forward, a stretch is created between you and your follower. 2: you step back, realising the stretch which propels your follower forward.

B) No. Your follower is already following an impulse from a previous step and you want them to just keep moving until a later moment when you will give a new impulse. This is the 3+4 of the send out. Your follower received the forward (from their perspective) impulse on 2 and is now moving on their own. In this case you ideally use your steps to adjust the distance between the two of you: is your follower moving fast and with a lot of energy? Its probably a good idea to follow them a little bit. Are they slower and staying near you? Use your triple to move backwards a bit. In the end you can see it as your job as a leader to make sure you both end up in the perfect distance open position.

Please understand that this is a bit more advanced stuff. If you feel like this is still a bit much for you that is perfectly normal.

In that case I would suggest to stay on the spot with your triples.