How do you complete the lunar pillars on Terraria Console?
If you really want to play summoner then consider using summoner specific armour like the spooky or tiki sets, since beetle armour has effects that benefit melee.
Other minion options pre-pillars would be raven or xeno staff. If you want the dragon then do the stardust pillar next.
To damage crawltipedes you have to hit the orange orb at the end of their tail, so use a weapon you can aim, since summons are unreliable.
Basically just don't engage too many enemies at once and fall back before you get overwhelmed.