Not shifting right and stalls when i brake

Hello, rolling backwards can happen if you're on a grade leaning backwards, or if the engine speed is really low -- there may be no "creep" forward. Your engine performance issue description as evidenced by not driving smoothly and stalling - kind of validates that thought. Seek local guidance at a shop near you to troubleshoot the engine performance first and foremost. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops