I envy all runners. I tried running many times, on consecutive days as well. After running for a minute or so, I start getting a burning sensation in the chest and I gasp for breath. I must stop and sit. After resting for a few minutes, I can repeat the same. However I can do fast walking for an hour. I suspect this is some condition that I have, rather than lack of practice. So I don't push it. Anyone thinks this is normal? Also I'm not sure if running for longer time is so much needed if I do walking.

Talk to your Dr obviously, but you may just be running too fast. There's lots of Couch to 5k programs that start off with 30s run intervals with walking in between.

With running you need to play the long game and slowly build up your pace, total mileage, and number of weekly training days. It's hard to be patient, but it seems to be the secret to minimizing training injuries.

Take a much more gradual increase in intensity. Start walking for 5 minutes, then speed walking for 5 minutes, then light jogging, etc.

Alternatively, try cadio exercise on a machine. Personally I like the elliptical machine way more than running. Mostly since I can watch Netflix and other videos while I do it. But it also lets you regulate and monitor intensity more effectively than running.

It's normal. Run slow and have breaks every minute. It will improve pretty fast (every run will be slightly but noticeably better than the previous one).

It took me at least a couple of months of regular running before I could run consistently on flat terrain without taking walking breaks (and almost a year to consistently manage long up-hill sections).

Consider taking it much slower and do intervals between walking and jogging (I'd do it by feel instead of timing exactly). Over time increase the proportion you jog.