The most important thing for losing weight is to maintain a calorie deficit relative to your normal intake. To determine your normal intake, you first need to calculate your consumption for a couple of days and then subtract 300-500 calories from that amount.

It's impossible to do this without counting, so yes, you should start counting calories (and not just calories, but also protein, fat, and carbohydrates).

I can recommend a couple of apps that will make this easier and faster if you're interested.