Studio already solves this by neatly organizing all your experiences for you by group so you can easily pull up the one you need.
If you need it from the site, the only reliable way is from the creator dashboard, select your corresponding group, then select the correct game, then click the 3 dots to go to the corresponding URL, and then you can test.
This isn’t egregious, but it’s a lot more friction than having all your experiences show up like in the homepage of studio.
Not to mention you also get a row specifically dedicated to recent experiences to easily re-launch them. The only similar thing the site has is the continue sort, but it has a ton of bias from the algorithm team so it’s very much not a consistent method of using it to quickly rejoin experiences.
The worst part of all is testing on mobile.
Unless you give your mobile device the specific URL for the experience using whatever fun method you prefer, there’s pretty much no reliable way of accessing your experiences on the app itself.