yes, your appetite will be non-existent during the initial rapid weight loss phase.
then, as you get to your goal weight, you will notice that you will experience normal hunger sensations again and can comfortably eat more food. this worries a lot of people because they think they are "stretching their pouch" (not a thing) and are on the road to regain. but that is not the case. rather, your body is saying "okay, i'm at the weight i should be at now, lets eat some more food so i don't waste away to nothing!"
in short, as long as you eat healthy whole foods a good 90% of the time, you can let your new appetite be your guide. if your body is hungry, feed it healthy food until you are satisfied. no need to count calories or portion sizes. if you have no appetite/hunger, don't eat! it's pretty simple.
the danger is if you go back to sugary/processed food. don't do that. fast food, junk food, processed food, alcohol, sweets... all of that should be part of your past. those foods distort your body's natural hunger signals (insulin rollercoaster, food reward balance) and you can very well gain weight in the long-term by doing so.