After 5,10 or 15 min gameplay randomly it just get closed I noticed for pubg but same thing happening with call of duty also.I m useing android 9 lastest updated i take out log of them I m pretty sure it android issue I will be waiting for problem casue and solution
Is your phone getting hot? Are any other apps crashing after 15 minutes of use? Can you try a stress test like Antutu that is not a game to see if the phone is the common denominator, or if the apps have some kind of problem. Would also suggest uninstalling and reinstalling the apps to check for improvement.