FBA or FBM if competition is too high and less profit margin

Hi everyone, I entered into a specific niche thinking profit margin is huge and FBA will be awesome. Happiness short lived when got to know tough competition with pricing and number of items sold monthly (got to know via H-10). M realizing the trend of sales is mostly on weekends and that too less. Keywords targeting is very expensive per click.

I don’t want to stop as well