Profit help please

[Alien360]

 How do you make a profit in this game? The more routes I ly the more I go in debt all my routes have a 80% LF but I still lose money

Sold tickets (economy)  414 380 USD  434 570 USD  174 460 USD  0 USD 
  Sold tickets (business)  0 USD  0 USD  0 USD  0 USD 
  Sold tickets (first)  0 USD  0 USD  0 USD  0 USD 
  Sold aircraft  0 USD  0 USD  0 USD  0 USD 
  Aircraft lease income  0 USD  0 USD  0 USD  0 USD 
     414 380 USD  434 570 USD  174 460 USD  0 USD 
  Office rent  -1 740 USD  -2 030 USD  -144 USD  0 USD 
  Fuel  -89 804 USD  -80 945 USD  -31 915 USD  0 USD 
  Staff salaries  -78 142 USD  -78 142 USD  0 USD  0 USD 
  Staff training  -6 191 USD  -6 187 USD  0 USD  0 USD 
  Marketing  -75 398 USD  -60 886 USD  -17 388 USD  0 USD 
  Passenger fees  -74 595 USD  -76 928 USD  -31 051 USD  0 USD 
  Navigation fees  -692 347 USD  -29 781 USD  -61 496 USD  0 USD 
  Landing fees  -24 313 USD  -21 564 USD  -8 381 USD  0 USD 
  Ground handling  -30 388 USD  -29 844 USD  -11 596 USD  0 USD 
  Aircraft maintenance  -36 528 USD  -59 146 USD  -22 593 USD  0 USD 
  Aircraft insurance  -6 641 USD  -6 944 USD  -2 976 USD  0 USD 
  Aircraft leases  0 USD  0 USD  -2 234 080 USD  0 USD 
  Purchased aircraft  0 USD  0 USD  0 USD  0 USD 
  Alliance fees  0 USD  0 USD  0 USD  0 USD 
  Fines  0 USD  0 USD  0 USD  0 USD 
     -1 116 087 USD  -452 397 USD  -2 421 620 USD  0 USD 
  Loan payments  -1 059 USD  -1 057 USD  0 USD  0 USD 
  Bank fees  -1 000 USD  -1 000 USD  0 USD  0 USD 
  Interest  -2 071 USD  -2 072 USD  0 USD  0 USD 
  Income tax withheld (30%)  0 USD  0 USD  0 USD  0 USD 
Result  -4 130 USD  -4 129 USD  0 USD  0 USD 
  Result  -705 837 USD  -21 956 USD  -2 247 160 USD  0 USD 

[Sanabas]

On the only week there that doesn't have a stack of costs for a new lease nor half a million worth of buying slots, you're roughly breaking even. Add more planes, and you'll probably make a profit. You're paying lots extra in maintenance because your only 2 planes are from different fleets (1 707, 1 727). You're paying extra in marketing and staff costs because you're undersupplying 5 separate routes instead of fully supplying two. Get more planes of the same two fleets as you already have, stick them on the routes you already fly, and you should see revenue increase while costs stay about the same, which means profit.