when you're a non mem runescape can be hard to get money and here are some ways of making money
woodcutting-just keep training ur woodcutting it helps if you have lvl 15 wood cutt cut oaks selll them at grand ex 1.4k per pack (28 logs in a pack) or its even faster to cut noormal trees 1k per pack they sell for. once you reach lvl 60 wc cut yews they sell for a bout 11k per pack
minning-you could mine mine stuff and sell it coal is pretty easy to sell as well bout 2k a pack
fighting-you could kill red spiders down at sewage and collect eggs they sell for a lot or you can kill moss giants and collect big bones they sell for a lot you normaly get 15k a pack (the higher the level the easier it is) if you're a noob low level go to lummy and kill cows collect their cow hides selll them at grand ex