Newish player, LF help!

Hi All,

2nd time playing POE (tried once in early 2019, but didn't get far), so practically playing for the first time seriously.

I followed a guide to bladefall + Blade blast mines build which clears most of my screen and then some... but I seem to be dying VERY quickly to almost any types of ranged attack.

here's my pastebin: https://pastebin.com/zw3RhgbT

The build I used as a reference:
https://youtu.be/DgD1yrwZo5o
(Title description for anyone that doesn't trust links: "3.10 Blade Blast Bladefall Saboteur Shadow")

I'm only up to level 87, and realize that I'm dying a lot in T10-11 maps to ranged attacks, especially those serpents from Al-Hezmin.

Would appreciate any help I could get! My resists are all at 75% (90% ish in brackets), -39% to Chaos, and 4500HP with 321 ES.

Very sorry if this is a wrong forum to ask for advice, but would genuinely appreciate the help! <3

As soon as I started the video I stopped. He does all his videos in standard. I don't trust any of his for this reason. Things are not the same.

As far as your struggles I cant really say.I don't understand the concept behind the chosen items you are using and skill being used.

( im sure if I watched video I might but as mentioned above no point).