I had the same issue when I first started.
I went out and walked the streets and some people said
"Already got one and he does this area"
other said "I really need a window cleaner"
others said "I got one but I don't like them"
and others said "F*** Off"
We are all working from same pot but I always leaflet drop or door knock in area I work in!
I lost maybe 9 customers and some have returned and some have not. But I always ask them for feedback. and that what part I enjoy is getting feedback about what I could of done better.