Advice on what I'm doing wrong here?

I'm stuck at level 92 and can't seem to get positive traction. I get some XP then inevitably die and lose 10%. Try different things, build it up, only to die a few times and back down again. What am I doing wrong?

For context, I'm a new player, doing SSF on Standard. I'm sure a lot of people would advise to play the current league or not play SSF but this was the challenge I set out for myself, so here we are.

Here's my character:

https://www.pathofexile.com/account/view-profile/Brytor-3360

I been following the build guide for deadeye on maxroll: https://maxroll.gg/poe/build-guides/lightning-arrow-deadeye-league-starter and made a few small tweaks based on others' previous feedback.

I've been trying to hit a 6 link bow so I can switch to a crit bow but haven't been able to get the 6 link yet.

I seem to be at the point where I die often enough that I don't really ever get enough momentum to get to the next level. I figure I could really grind level 75-80 where I rarely die, but the character's a bit of a glass cannon and one accidental death wipes out a fair bit of grinding because of the XP penalty.

I have a hunch that I'm missing a few things that would get me over the hump but not sure what they are.

Would appreciate any thoughts or advice people have, any glaring mistakes I've made, or suggestions for how to proceed.

I do plan to redo my bandit choice into the resistances - i took the extra skill point - but for the most part otherwise I think I've followed the guide pretty closely. I also went off book to try out wind dancer to see if that would help with survivability but doesn't seem to be a huge bump.

At this point for playing, I mostly pinball between maps, delve and the occasional heists. Most recently got my ass handed to me trying to take out the mastermind, which wiped out all the xp I'd gained for the level, so sitting back at 0% again :/

Thanks in advance and happy to provide any more information that's needed, just let me know.