Opinions please

I am a newbie swimmer....and learnt few things like bubbling under water and floating....with my few previous sessions i can swim upto the distance of almost 17 yards. But i can swim with just one breath.....i have to stop afterwards..i am having a great difficulty breathing while swimming. Even when i try i feel two things

1. Water suddenly rushes into my nostrils
2. I feel an change in pressure in ears when i stuck my head out and it feels like that water tries i get into my ears also due to pressure change

Please share ur opinions how to deal with this ...also what next to learn in lesson after bubbling and floating. I want to unlearn the bad ways i probably have learnt during my few old sessions.

Thanks

submitted by /u/Particular_Ebb_2515
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