Help! I keep getting outbid on my flip home offers

I'm a real estate broker in Tucson, Az and I've been trying to buy my first flip home for the last 6 months or so and I keep getting outbid. I have studied flip books and repair costs etc, so I think my repair estimates are fairly close, but I'm having trouble getting a deal accepted. So far I've only used the MLS to find deals which I know might not be the best source but that's what I'm the most familiar with. From everything I've read, I've been told to try and at least make $10,000 on every flip and that is my goal right now. My top purchase price before fixed up is $100,000. Maybe my repair costs are too high? I don't want to bring in contractors until my offer is accepted. Any advice would be greatly appreciated as far as a strategy to getting an accepted offer. Thanks