I feel like banging my head against a wall
I'm not sure how to answer this, since I'm not sure what you've done or tried, how much protein you're trying to get, what your eating style or schedule is, what foods you like/dislike, etc.
When I was starting out:
Some people use protein powder or protein bars to increase their protein intake. That's fine, but I don't do that because I don't personally find those tasty and satisfying. I prefer to get protein and other nutrients from food, to the extent possible.
When I was on reduced calories, I reached the point where I was getting at least 80s-90s grams protein daily as a vegetarian. In maintenance, my daily minimum is 100g, and I usually get more than that, often up to 110-120g.
In case you haven't seen it, you might find this thread helpful for identifying calorie-efficient protein sources - it helped me:
https://community.myfitnesspal.com/en/discussion/10247171/carbs-and-fats-are-cheap-heres-a-guide-to-getting-your-proteins-worth-fiber-also
Does it HAVE to be 20 g per meal? Can you space it out and have 5 g here and 10 there?
When I was forced to lower my carbs, I, of course had to look to upping my protein (which I should have done anyway imo) and fats. Not gonna lie, I still have a brain blockage when it comes to not eating low fat.
So, basically, I brought a couple protein snacks to eat at work (steamed chicken, baked cheese bites, string cheese) and added canned/pouched salmon/tuna/chicken mixed with avocado and no sugar added bbq sauce (to make the salmon and tuna less fishy) as an after work snack because I prefer to eat later at night.
But, yeah, I also add protein powder to my greek yogurt/cottage cheese mixture and started making protein popsicles and buying protein bars, cutting them up, and freezing them.
Ooooooh and eat a hard boiled egg every night.
It adds up!
Twenty grams protein is a pretty low threshold to reach. To whit:
Breakfast 8oz milk: 8g Two eggs: 12g Total: 20g
Lunch 1.5 cups creamy tomato soup: 11g Grilled cheese sandwich: 10g Total: 21g
Snack 1 oz almonds: 6g 2 oz cheddar cheese: 14g Total: 20g
Dinner 3 oz chicken or pork: 27g
This is just an example, and doesn't include all the other stuff eaten during the day. But just a few items can easily top 20g per meal. Remember, even stuff you don't think of as having protein (bread, rice, etc) often does in at least small amounts, which all add together.
For me it’s tricky because I don’t have a lot of calories to work with. I try for 100 g of protein but I rely on one protein drink per day for 25 g at 150 calories. I eat Costco canned chicken breast and air fry fish, both of which are high protein foods. I hope this helps