Negative profit with google ads

[marketpace]

Hi , i just to want to thank the community and all the members who helped me and gave me advice because i was almost giving up but after hard work i achieved some sales from totally 0 to 307$ this month . But im not too happy with it because when i calculate my profit its negative i spend a lot of money on bidding with google ads ( shopping and search ) so i really need some help some tips or strategies to use to maximize conversion with low cost .
Thank you.
Thank you