More time?

90% of my losses in arena are due to time. games in which I already had a snowball and I have lost them due to lack of time, or games that I have lost after a turn I did not have enough time to think everything and after said turn I see that I did have the opportunity to win. What makes you very angry is when you have the game in your favor and only time bothers you. Sometimes I make a calculation error and that makes me lose, that is totally acceptable, but losing due to lack of time? It feels unfair.