If you keep practicing, you should get it to go in 2nd gear with no problem.
I try to avoid 1st gear bump starts, because supposedly it puts more stress on the engine, and if you're going too fast, than it can mess something up. I'm not sure of the accuracy of that, just something I've heard.
Bump starting has saved me many times, my starter was dead for about a week, but luckily, the parking lots at my school were mostly hills, so I was able to bump start it until the weekend when I had time to work on it.
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