You're unlikely to get professional investors interested, so your other options are:
1) Bank loan - unlikely because you're too high risk unless you're willing to personally guarantee it.
2) Strategic investment - get an investment from someone who cares about things other than about the financial return. This could be other complementary industry players or an angel who really cares about your space.
3) Investment from your customers, if your startup solves an important problem for your customers they may well be willing to invest in your startup because they need a solution rather than for direct financial returns.
Comments
You're unlikely to get professional investors interested, so your other options are:
1) Bank loan - unlikely because you're too high risk unless you're willing to personally guarantee it.
2) Strategic investment - get an investment from someone who cares about things other than about the financial return. This could be other complementary industry players or an angel who really cares about your space.
3) Investment from your customers, if your startup solves an important problem for your customers they may well be willing to invest in your startup because they need a solution rather than for direct financial returns.