@Curious85,
No worries. You may have just started your enema journey with a bag, but I promise you are not the only one who has dealt with this particular problem. As others have mentioned, in general, the thin plastic nozzles that come with your typical CVS- or Amazon-bought bags are not the best. They happened to have worked for me for a long time but I have had the same issue that you described forever, too. Having a good, thick and long nozzle (or just thick or just long, there’s a lot of room for exploring here… pun intended lol) makes a big difference. Personally, I love siliconenozzles.com and they have a huge variety of options in all shapes and sizes, and they have some excellent ones for reasonable prices, too. I find that this (https://siliconenozzles.com/collections/colon-enema-nozzles-39/products/of-1) and this (https://siliconenozzles.com/collections/colon-enema-nozzles-39/products/of-2) very good choices for beginners. I only have the second one and wish it came in a larger size, but I have been using butt plugs, doing anal training and enjoying enemas with big nozzles for a number of years and have found what I need and want in anything that goes up my ass. Siliconenozzles (SN) has much bigger and thicker and longer options but I would recommend starting with some of the smaller ones and seeing how you like them. You can always get more! I wouldn’t waste money on anything that you can find on Amazon or similar websites to be honest, I bought a few things from various vendors there and they were all pretty meh. I have not bought any of the nozzles from Optimal Health Network but I have heard very good things about them. They are smaller (although I can see how their shape could make them work very well and stay put) than anything I own and fairly expensive in comparison but I have been meaning to grab one at some point.
Other options, not necessarily beginner friendly, though, are double balloon catheter-style nozzles and colon tubes. SN and Optimal Health Network both sell their own versions of these (and many other places, too, although I would avoid Amazon again. The DBC I got from there literally exploded inside my ass and, while it was not a particularly traumatic experience for me, I know people who did experience injuries from poorly made DBCs. For me, the only ones that do the job are the medical grade ones and they are not the easiest to find) and they are pretty decent. My personal experience is with colon tubes from both retailers and they have never disappointed.
Feel free to message me if you think I can help you further and feel free to ask any questions you may have here. Lots of people with a ton of experience will be happy to answer them and, after all, we all learn by doing 😉
Play safe,
B x