Does frequent flatulence necessitate repeating ablution and prayer, and is this considered uncontrollable flatulence? And what is the ruling on the sensation of urine exiting after relieving oneself and moving?

If the emission of wind is continuous such that the worshiper does not find enough time for purification and prayer, then he is afflicted with chronic flatulence ( سلس الريح), and his ruling is like that of those with excuses. He should perform ablution for each prayer after its time has begun and pray the obligatory and supererogatory prayers until the time expires or another impurity occurs. As for drops of urine after relieving oneself, if it is not a case of obsessive doubt (وسوسة), one must guard against it with a cloth and wait until its emission stops, then perform istinja' (ablution after defecation/urination) and wudu' (ablution). It is recommended to consult doctors for treatment.