Whatever cup you decide on, give it a chance before cup jumping.
To others just starting out I encourage you to stick with it. It's a new experience and takes trial and error practice and patience.
Small steps lead to great gains!
Your First Cycle With Your New Cup
First thing is to just work on inserting and removing the cup while using good hygiene. That's step one, learning how to get the cup inside with no pain. Relaxing is very important. Wash your hands too. My first cycle was basically just figuring out how best to insert using several different folds. Same for removal. Take you time when removing the cup. Relax and don't yank it out. Breathe, bear down and reach up to feel the side of the cup and push one side to release any suction. Continue to bear down as the cup is pushed lower while you are gently pulling the cup down. Try to use one finger to place a slight fold in the cup. That way you are removing the cup similar to how you inserted it...folded. Be happy when you start to get the hang of insertion and removal. Don't worry about placement and leaks right now. Focus on these skills for a few days or longer if needed. My first cycle I inserted and removed about 4 times a day. Try sitting on the toilet and opening your legs wide if need be to insert. Get the cup wet if that helps it glide in. Use water, lube or blood.
After you feel confident about insertion and removal, focus on placement, making sure the cup opens fully and stopping leaks. Again try different folds. I have found 7 fold tends to allow the cup to open easier than a C fold. Now is the time to experiment with perhaps getting the cup in and allowing it to unfold earlier. This may help with any issues of the cup not popping open. Get the tip of the cup past the muscle and release your fingers. The cup may make a whoosing sound as it fills with air and creates a slight suction. I have found that the cup is going to go where it's needed regardless of where I try to aim it. I let it open, bear down a bit to make it ride lower and then relax and the cup moves up into position. I have a higher cervix and it seems to find the correct place to sit. If there are leaks, look at the cup after you take it out. Find out where it is leaking. Down one side? Was it some flow that ran down the side when you were inserting? Looking at the cup will help you figure out why it's leaking. This is also the time to touch the cup after its fully in place and make sure it's opened and not mostly folded. My cup stays a little dented at the bottom because of my pelvic muscles. But there's not leaks so I know the cup is mostly open. You can also try to feel if your cervix is in the cup, and not outside. If the cervix is outside this will cause bigger leaks.
After you have experimented with placement and unfolding, you can now enjoy a leak free period! This is the time to keep track of flow level and hours. Keep the cup in for 3,6,10 hours and check the level each time to gauge your flow. This will help you discover how long you can leave the cup in before it fills. Then when you're out and about you won't have to guess how full your cup is. You'll know from expeimentation. Keep track of the cup level on light, heavy and medium days and make a mental note.
Take it one step at a time and try not to get overwhelmed. Introduce this new method step by step, mastering each piece before you move on. You'll be the master of your domain in no time!