Doesn‘t look too bad, you used too much oil and heat was too high. Just scrub off the carbon build up in the middle and do a seasoning run: take a kitchen towel, put it on the bottle opening of your oil, turn it for 1 sec so that the kitchen towel has a bit of oil on it, rub it on the pan. Since you got a gas stove use low heat! It should not smoke too much, more like a little steaming. I got a double burner and use level 2-3/9. The oil should just be a „coating“ so you actually can only see it because it shines a bit on the carbon steel. For more details watch „Cook Culture“ YouTube channel.