I use a Hollister two part system. Before I apply the flange, I apply calamine lotion all around my stoma area. Hit it with a blow-dryer until it is chalky dry, then apply skin prep and then the flange. Warming the flange with the blow dryer helps with adhesion for me. Recently I bought a stoma cover for showering on temu. for about $10.00. Use without the bag to cover the flange when showering. I have lived with an ostomy for twenty years. You can do this!