How to be less dependent from FB Ads,

I’ve come to notice that if i don’t do ads my sales sucks.

How can i maintain a stable source of income without depending on ads?

I have a lot of repeat customers so not that my company sucks or the product sucks. I just can’t seem to work without ads.

I sell booze, started 3 months ago and doing almost 200 weekly orders and spending around 700-800 usd weekly.

The thing is, selling booze has thin margins so if i mess up one campaign or my ads are not going well my margin suffers badly.

What kind of tactics could i use so with time i can be less dependent of ads?

I also do mailing but meh, i have good opening rates 40% ish and 5% CTR but it’s not like i could survive only of mailing sales.