Debt management

My first student loan was taken out in 2007 and when I graduated around 2015 that’s when the monthly payments started.  The loans are currently through Navient via a direct loan.  It’s multiple loans that they force me to pay as one lump sum.  I believe 13 smaller loans ranging from $500-$13000.  I appreciate everyone taking the time to even answer it means a lot. Thank you.