What do you find filling?

IMO, from reading many people's posts here, satiation is quite individual. Experimentation can uncover our individual needs, which can involve not just macros, but sometimes timing of food (or macros) and possibly individual food choices. I know, that's complicated . . . and it would be nice if it were simple.

On top of that, some people feel more sated when they overall hit solid nutritional goals (macros, fiber, micros), or when they eat mostly traditional, simple foods (what some people might call whole foods, like meats/fish, dairy if not sensitive/allergic, whole grains, plenty of varied and colorful veggies/fruits).

If you're not getting even the MFP default level of protein, that would be a good thing to chip away at improving. It may help satiation, and it can be important for health and body composition, among other things.

Look at your diary: Are there foods contributing relatively many calories, not really paying off in terms of nutrition, tastiness, satiation? Reduce or eliminate those to free up some calories. Use those calories to add foods you like that have more protein, such as those high on the spreadsheet linked in this excellent thread:

https://community.myfitnesspal.com/en/discussion/10247171/carbs-and-fats-are-cheap-heres-a-guide-to-getting-your-proteins-worth-fiber-also

Use that review/replace strategy to gradually get your protein to a better level eating foods you like, see if you feel more full.

In a sense, successful weight management is a process of experimentation and adjustment, analysis and problem-solving. If you keep experimenting, you can gradually improve your tactics, I think.

One concerned-internet-auntie comment: If your calorie deficit is too aggressive, satiation will be out of reach . . . and weight loss rate may (probably will) need to slow as fat reserves get smaller. Most bodies resist too-fast loss, though "too fast" is also a bit individual.

My personal satiation formula is a solid breakfast with plenty of protein, then adequate protein spread through the day; high volume low calorie foods at some point (usually a boatload of veggies at dinner, literally many hundreds of grams); small protein-y snacks if appetite spikes when a meal isn't on the schedule soon. On top of that, I do better if my day includes my beloved oatmeal, some prunes (usually about 30g +/-), and some small treat food (not nutrient dense - like a small piece of good chocolate, some dried mangos, . . . ).

That will not be your formula, I'd pretty much guarantee. But you can find yours by experimenting, while not cutting calories too, too far.