It depends on where you want to get financing from. What Josh is suggesting takes a lot of work and there are plenty of forum posts and blogs on how you can do that. Don't just assume that in the current market there are going to be a ton of people who are 'motivated to sell'. If you're prepared to put in the work it can definitely pay off.
If you're just looking to buy a house with traditional financing from a lender, credit scores matters.
The basic things a lender/underwriter for residential is looking for is:
1) Steady W-2 Income (the bigger the better)
2) A low debt to income ratio (Current monthly debt payments/current monthly gross income)
3) Credit Score/Credit worthiness (Although FHA/Home Ready have lower requirements on credit scores)
4) Property value (Appraised value vs. purchase price)
I purchased my first condo in 2013 using an FHA mortgage. At the time I didn't have much credit history etc. so my credit score was only 600 I think. Since then I've opened a few credit cards and made on time payments so my credit score is above 700.