Is it really that much? I’ll have to get the zoom lens out and do some comparisons. Not that 28mm is an issue. I have a really cheap 7artisans 18mm pancake lens (28mm-ish) that I’ve used and I’ve liked the wider angle. 35mm is just my sweet spot for a do anything lensIt's not quite as simple as that as it will depend how far away you are from the subject. The difference is 25% so if you subject is at 2m away using a 28mm you'd need to be 2.5m away to get the same framing with a 35mm (2m x 1.25 = 2.5m). If the subject is 10m away with a 28mm you'd need to stand 12.5m away with a 35mm lens.
This can help get an idea
canon
lenssimulator-cna.academy.canon.de