It is definitely possible to fix your credit score for free. There are multiple DIY methods you can perform, just make sure you research them well before taking any action. Start by accessing your free credit report from AnnualCreditReport.com.
If you see anything that doesn’t look right, you can initiate a dispute with the relevant credit bureau. Good financial behavior moving forward also helps, like making all of your bill payments on time and paying off revolving debt from credit cards.