Hi Jia Xian!
There’s a good bunch out there -
I think if you click the shopping function on the app there are a few recommendations.
I thought the Itsy Ritzy ones here looked snazzy:
https://www.pupsikstudio.com/search/go?p=Q&srid=S1-3SYD-AWSP&lbc=pupsikstudio&ts=custom&w=Stroller%20bag&uid=657791903&method=and&isort=score&view=grid&srt=24
Honestly, the most important thing for me would be that it doesn’t topple the stroller over and that it should balance out nicely.
I find at times, having too much space in the bag means we are tempted to put many things :)
Jia Xian