What is the deal with end game ritual maps?

I have a really strong build and every other time I get mobbed and just escape log out before I die. Is it a design choice for melee tanks or something because even with a ton of stun threshold investment and AoE DPS I cant do it with a hit point pool of 8k (MOM and Eldrictch Battery with everlasting gaze) im using spark that has 15k DPS. Is it intended that some builds just skip this mechanic?

For context I'm around tier 6 maps.

I'm pretty sure when you activate a ritual it revives any mobs that died within its influence. Can you try to lure some mobs away from the ritual before activating it for lower difficulty?

So far rituals for me seemed fine, the thing I dislike about ritual/ultimatum is that the items in there are SO bad, like outright terrible.

-edit-
my spark sits at roughly 20k dps with a chain and 2x 85% shock+80%exposure
Also if you struggle on dmg use firewall, it boosts spark dmg by a LOT

Do you have 75+exposure or 75pen on tree?
Swapping in pierce might also help

If you still struggle with clear, use tempest on 20 quality just standing in it for short gives your projs +fork/chain and the buff lingers for a second due to quality

My Titan's Blood warrior doesn't have too much difficulty with rituals... So long as they're not spawning the chaos plants (screw those plants still...).

But yeah, the rewards just don't seem worth it. I've finally seen ONE omen, all it took to do was reroll the rewards, and not being able to afford it so I had to differ. I'm in tier 8 maps, but I don't particularly chase Omen (been more going for Delirium, and I want to do more breech but never seem to really have the clear speed or movement speed to keep it going).

It was fine a map ago and now that I looked at my map multipliers on the problem map one was 51% elemental resistance so that is probably why I had a problem. disregard the post.

Been doing juiced rituals t15/16. They're a little rippy but tbh its not a big issue with strong defenses and proper clicks