Shadow, I think you might be misunderstanding what it means when it says that the amount of credit you have recently applied for is "not good". It is not telling you that you need to apply for More cards, it's telling you that you Shouldn't apply for more accounts. It is "not good" because you have applied for credit recently, and generally people who apply for more credit are more risky borrowers. So what Myfico is trying to tell you by "not good" is that your score is being lowered as a result of you applying for credit too recently, NOT that you need to apply for more credit.
Think about it from the bank's perspective. Say they have two potential candidates who are both looking for loans, Bill and Bob. If Bill has an established history of 5 years and hasn't opened any new credit account in the past year, then he looks pretty stable. On the other hand, if Bob only has a 2 year credit history and has opened 10 new accounts in the past year, he looks much more risky because he has a lot of new credit - it could be a sign of desperation.
New credit inquiries and new credit accounts opened recently will lower your score in the short term. However, as long as you make timely payments and show that you can manage that new credit responsibly and let the accounts age, your score will rise in the long run.