Frustrating what am I doing wrong

[Sherlock Holmes]

I've been focused and trying to find a deal for about 3 weeks now. I've put up bandit signs and stickers which got surprisingly few calls I put an add on the internet and got 10 times more responses. I have probably made around 10-15 offers and no one wants to accept. I really don't know what the problem is I'm following the advice on the wholesale articles and the advice of other investors on this site. I thought for sure I would have a deal by now. I live in an area where the average home price is around 500k and when I offer 30% less it's taking around 150k off of the market value so I don't know if this just seems like too much of a discount to sellers or what. If anyone can point out what I'm doing wrong or give me some advice I would like that very much.