Both FinTech/eCommerce are bleeding businesses and finding support in such macro environment is bit difficult.
My suggestion would be to go read about these domains more. Try understanding the problems and existing solutions.
To give a quick overview -
- FinTech - Lending, B2B payments, investing, rewards sourcing
- eCommerce - Vertical eComm, horizontal eComm, D2C, B2B eComm
Just google these keywords and try understanding opportunity sizes.
Do some more research, that’s the first point of entrepreneurship not asking strangers. As of now, it feels you are planning to ride the trend, which isn’t a trend anymore.