I use that ap too. I use it more for ball parking and make sure I don’t go crazy. I find if I have to record what I ate, I am less like to eat it (snacks).
I always overestimate my portion size and underestimate my activity level. For example, it gave me something like 500 calories burned for a 30 minute yoga video and only 250ish for a 40 minute run.

I started using MyFitnessPal a few days ago to track my intake. A couple things stand out.

Either I am eating fewer calories than I think or I am underestimating portion size. It keep putting me at 900-1000 calories a day but I think I am eating pretty decently and am not going hungry.

The only metric that I always go over on is the grams of sugar. It is all coming from fruit and veggies.

For example today in terms of food with sugar, I had plain greek yogurt - no sugar added, a banana, a mango, carrots, a few baby potatoes and a splash of milk in my tea and that put me over their limit - saying I am 4 grams over.

I don't think it is possible to eat healthy (fruits and veggies) and not go over. How would I get enough servings of fruit and veggies in a day and stay within the sugar limit? Or does it matter since they are 'natural sugars'?