Approaches for setting realistic price targets?

I‘m having a hard time setting realistic price targets for my little coins and tokens when it comes to selling. The first levels that I started with got partially overrun much quicker than I thought.
I mostly set 3 or 4 levels for each asset. I hold about 20 coins/tokens (yeah, ik ik, leave me alone) of which a few are only waiting to become break-even to be sold. But for some others I expect the last levels somewhere around their ATH. For the most part it just feels like picking random numbers that are based on gut feeling and a little anticipation of the rainbow chart.

Any approaches that might even include TA? I appreciate any input, thanks.