Initial thoughts, I like the vocals. Some of the composition feels kinda plain though. Especially for a trance song, it would really benefit from more automation and flow. There's a lot of reverb which makes the mix feel messy. Some automation and ebbs and flow would make it feel less repetitive before the break. Fade out?! Tsk tsk. For shame.
Some main takeaways, the writing suffers from feeling repetitive. There's definitely a repeated two measure tune that you've got going through most of the song, but it would have benefited from some development and change ups. Maybe changing the rhythm more, flipping it backwards, or just simply playing around with it to make it more interesting during the song. Or even having counter melodies that work along with it to make it feel more special. I also want to repeat the idea of using automation. It's got a nice poppy, bouncy, happy early 2000's dance sound, and I would agree that trance is close for this style. Especially if you're making something that's close to trance, automate anything you can think of lol. Automating filters does a really good job of making things flow well without even needing to change up much stuff. Changing up the waveforms of individual synths adds a lot of flavor and spice to a sound too that you can automate. At the minimum, automating some gains/or volumes would help bring elements in or out smoothly.
Another thing is that some stuff and sounds feel like they're really dry while other things are marinating in reverb. I think the stuff you have in the background has too much reverb, like the piano and the plucky synth thing (probably the bells you mentioned). Contrastingly, the lead synth that you have repeating the melody the vocals use could benefit from having *a little* reverb to help it sound like it's in a big room, but you only want to use a little because it does need to sound close since it's your main lead.
Looking at the other judges' comments, I agree with their take on the bass and controlling your high frequencies, so I don't need to say much more about that. I do like your style, but it could benefit from refinement. This has some good Eiffel 65 Blue vibes and eurodance feel that I would personally be down for in the right context.
Some song recommendations I would give for you to study, take a listen to Let Me Go by Denis Kenzo or, my personal favorite, Oceanlab Satellite from Above and Beyond (the original Oceanlab one works too). But I'd recommend paying attention to how the bring sounds and gently transition, and also pay attention to how they're using their voices / melodies. Now these are full blown trance songs so they're focus is more about the groove compared to something like I'm Blue (da ba dee da ba dai), but it should still give a picture or idea on how once could focus on the flow of a song.