No one seems to warn you about how long it takes for your new pouch to behave well, plus everyone is so different. Give yourself a year before you know your "new normal".
I recommend doing some indoor execise activities before trying to walk outside for an hour. That way you can pause and use the bathroom as needed. (Otherwise, pick a route with known bathrooms along the path just in case.)
Definitely invest in a bidget. I bought one for about $40 from Menards and it has literally saved my behind from so much but burn! I also use Calmoseptine cream, especially at night in case I leak. It helps calm things down and provides a bearer in case there is leakage.
Don't forget to give yourself grace as your body is still learning to adjust. I remember how rough nights were at the beginning and exhausting. It will get better my friend, but you'll question why you ever thought this pouch thing was a good idea.
Best wishes as you adjust