Is it possible to transfer an online store from one platform to another?
Yes, but for this purpose you need a special help of programmers. I used to develop an application for business via https://fireart.studio which is a trusted service, that might be really helpful if you also want to transfer your online shop, to to make your business work effectively. They are meeting all the modern standards and helps to develop their service.
Yeah, that’s possible. Now there are a lot of opportunities to find a good platform on which it will be easy to build your business. I looked at the different options here https://elogic.co/blog/best-magento-development-companies-operating-globally/ before deciding on the choice. You might find the solution here too, maybe you will change your opinion and choose a magento.