I bought my first running shoes 10 days after started my running, without thinking or doing any research, I just went to shop and bought whichever I liked and a known brand (Reebok). Within couple of months Sole was wear off badly (see top picture), still somehow I kept it using, but started to have problem in my run and lower leg, recently one of my friend saw and throw away those shoes saying you are harming yourself. He suggested me good quality road running shoes (Ascis Cumulus 20) which I bought last month, but exactly in a month I can see sole is wearing of from same place as my older one. Seeing this again my friend told me that I have pronation lending (first time I heard this word).
I am not sure if it's good or bad but I am worried if it can cause injury. Can this be corrected to have natural lending or what kind of shoe I should buy to avoid injury due to pronation.
Any suggestions, thoughts?