Do I have to pay and be pro to be able to share my application in google play with admob ads or can anyone do it for free?
The only thing you have to pay is for the Google Play Store developer account, which is one single payment of $25 (US Dollars) for life.
are you sure? I had read that a user complained that he later charged money for everything, thank you very much brother!
The only one that charges a lot of money for their premium components is Thunkable. Other than them, you only need to pay for your Google developer account and nothing else.
Maybe you refer to google that charges $ 25 per development account and also charges you 30% of each sale or subscription, really if the commission is somewhat high.