New seller account: I only have one SKU and can sell it for 50€ vs 75€+ from other sellers. How to get my listing as the main one?

I only have this SKU (100+ available units) and can ship in 2-3 business day.

Obviously my listing is hidden because I have a new account with zero orders… but how can my store ever get the reputation if my listing never gets recommended?

Btw this is FBM and can’t really do FBA given product weight and slow sales.

(I’m a noob as you can easily guess)