Fireball Theory - PoB idiot made

Hello friends. I have yet to earn my doctorate in path of building so this is about the extent of my skills. Any masters of PoB able to clean up this pre-buff/nerf theorycraft I have created? Ashamed to admit I spent the better part of 3 hours making this and the numbers don't seem too impressive, but tbh its the best I've ever managed to make without copy pasta someone else's Archetype.

Thanks in advance!

https://pastebin.com/WzL2p7Nh

Hello,
I think this isn't the way to go, this build offer no defensive layers.
End game will be a pain as it.

I am not enough skilled to do something viable with Fireball.

Just some quick tips:

Don't use 6 passive medium cluster jewels - the extra skill point spent is basically never worth it, aside from perhaps some very niche applications (can't think of one spontaneously). Ironically, the opposite is often true for small life cluster jewels, 3 passives are usually best.

While making your build, set your resistances to maximum (just add "+500% to all resistances" in the configuration tab -> custom modifiers), set enemy damage to 5000 and check your EHP from time to time while theorycrafting (click on Calcs and scroll down).

How much EHP you are comfortable with is up to personal preference and this statistic is not the be-all-end-all, but personally I wouldn't play anything that doesn't have at least 100k against elemental and 75k against physical damage with a guard skill up, but again, this will vary widely from person to person.

However this build is extremely squishy and offers no reliable HP sustain, so death is inevitable at even slight mistakes, you should consider adding at least some defenses.

Also Doomsday and Malicious Intent aren't really doing anything for this build, you'd only use those if playing Hexblast Ignite.

I hope this doesn't come off as harsh or me being a smartass, it's just stuff I wish I had stuck to earlier myself when starting to make builds. That being said I also play on a strict 0-death policy, so if you don't mind the occasional death you can certainly get away with squishier builds.

All helpful Xeno. Forgot to uncheck the Doomsday as it was originally picked with a Balbala Brutal Restraint timeless jewel for the flask regen keystone. Honestly in POE I don't think ive ever had a build in red maps that didn't get 1 tapped off screen with or without being a defensive build so I kinda just don't bother with heavy defenses anymore. Mostly just looking for advice on cleaning up the tree, have not bothered adding any defensive skills with the remaining mana. All advice is very much appreciated. I had no idea you could see anything like that EHP tab so that is super helpful.