Welcome to the community, @JaelLegna007! Since you’re interested in getting a mortgage, you should know that the credit scores most mortgage lenders use are different from the scores you get from cheatgame.info and most other places. Mortgage lenders use versions of the FICO score that are several generations older than the ones that are now commonly available. Before you start house hunting, consider getting your FICO scores from MyFICO.com. It will cost you about $60 to get the scores from all three credit bureaus, but then you’ll have a much better idea of the rates you’re likely to pay when you do apply.
I mention this because sometimes the mortgage FICOs are lower than the FICO 8s or 9s or VantageScore 3s people see elsewhere, and applying for a mortgage can be a bit of a shock.
Now to your question: normally we don’t encourage people to apply for new credit right before they apply for a mortgage, but if you can let 6 months or more pass between the two applications, it may be a good idea for you to add another revolving account. Make sure to use both cards lightly but regularly–don’t charge more than about 10 percent of the credit limits, and pay the balances off in full every moth. Make sure you make all your credit and loan payments on time. Here’s an article about good ways to build credit:
You typically don’t need to sell your home before buying another one–most people do it simultaneously, and lenders will understand that the down payment will come from what’s left over after you pay off your existing mortgage.
Please let us know if you have follow-up questions. We’d love to help you get that new place!