looks like you need to grind the tiger strike playlist, earn vanguard marks and buy vanguard gear. you can get to 26 with just un-upgraded gear. so sir, that is on you for not being bale to do the raid. to get full vanguard gear it will take you 4 weeks to get to be able to buy a set of vanguard gear, and if you buy an exotic it will only take you 3. so get to that grind buddy. you can do it! and if you need help, you have my gt. just send a message.