It is halal and normal to have emotions for the first time when using tongue and lips

[Nitro Zeus]

Just now I made courage to perform ritual prayers, and now I feel very bad because when I was using my tongue, I mumbled as if I had emotions, because of not practicing, and because of this, I fear that I may have done plenty of mistakes during Maghrib prayer, because before I used to pray only in my mind the ritual prayers, now I feel like getting closer of becoming a Sunni Muslim.

So, it is perfectly normal to have emotions when I prayed Maghrib with tongue for the first time? Will I get Punished even for mumbling while reciting? I feel so shamed that I mumbled. I also have used my smartphone which contains a picture of how to pray and I used it as a guidance for performing the prayers and each time it turns off the smartphone, I stop for few seconds from praying until I turn it on, then I continue praying while using it, now I finally made it, but I still feel bad of the way I prayed, in state of shame and embarrass. I understand now, why I was ashamed of praying, that is all because of Satan.

P.S. My intention was to start performing ritual prayers and try to do as Quran requests, and now I start only with 2 prayers in the beginning only and later on, I shall develop it by adding many numbers until I reach the maximum which is 5. Will God reward me for what I intended to do? I'm really sorry if it is stupid question, I'm just really scared as I don't know what will happen to me in future.