Try to buy some legendary gear. If you mostly play pve level up your vanguard rank. You need level 2 to buy gear and level 3 for weapons. Once you hit rank 2 you can buy gloves and boots. They will cost 75 marks each. To buy a chest piece you need 75 marks and a commendation. You get commendations for vanguard rank 3 and each rank above that. So do your bounties as often as possible and run roc strikes from the playlist to get marks. You may even get lucky and get a legendary gear drop from the strikes. Finally try to get an exotic helmet by getting 13 strange coins and buying one from xur. You will need ascendant shards to level the gear, so do the daily and vault of glass normal. If you get everything to light level 33 you will be rank 31.