Your snacking has nothing to do with satiety or hunger. It is a matter of habit and cravings of ultra processed high palatability foods.
You do not need to eat more protein, you need to eat less often and abandon snacking all together. If you maintain the habit of grazing, watching tv while eating something, and so on, it doesn't matter if you eat a boiled egg or a packet of crisps. You are maintaining and reinforcing an habit.
If you are trying to lose weight, you need to eat less calories, not adding more of them in the form of protein.
Your body can only process a certain amount of protein, above that, any excess will be stored as fat.
Let me repeat this, excess protein are stored as fat, so why would you eat more of them.
300 gr of broccoli will satiate your for hours so will 300 gr of green beans . Have big plant dominant meals, add some fermented foods, and slowly change your food preferences. Remove the habit and the triggers. Only eat while sitting down at a table, without screens.
Don't buy junk so you don't have in the house and you won't eat it. Have only food as close as possible to their natural state. IT doesn't matter Low carb, low fat, when it is the healthy version of it.
The reason you gained weight was not because of an excess/deficiency of any macros, but because you fell for the ultra-processed food, industrial food, fried food, in other words , the junk. You didn't gain a stone eating lentils stew or a zucchini risotto. The solution is not eating more protein, especially in the form of ultra processed, full of additives, emulsifiers protein shakes.
When the urge to a -little-something comes, acknowledge it and send it away, you are an adult woman. If you struggle, leave the room, turn the tv off.