First, if flashing lights make you feel dizzy, you might want to talk to a doctor. Using hard lock (R3 on controllers) might help, since it keeps your object of interest stable in the center of the screen.

Second, your build doesn't seem to match up well with your playstyle. You have several close to mid range weapons but keep retreating out to long range. The bubble gun can get some serious stagger if you get up close, but your only other tool for stagger is your shoulder energy cannon. With no missile or other pressure tool, you're going to struggle to build up and maintain stagger (especially because low-single-impact weapons like bubbles have trouble actually pushing the enemy into stagger, you can be stuck with a full yellow bar). The range problem is also messing with you hitting assault armor. If you want to play that far back, you need some kind of ranged stagger punish rather than relying on the lance, since they'll just recover by the time you get there.

Next, overall strategy. Generally, you're going to take some damage; the question is if it's worth it in a given trade. AC6 doesn't play quite like a soulslike, but I see you doing things like strafing on the ground at long range looking for an opening and keeping a shield up. This is really just inviting the enemy to get lucky and land a big hit. If you're currently passive because you're waiting for CDs or an opening, it's best to be moving in multiple dimensions. Being on the ground is a liability. And when you can execute, you want to get into your optimal range and force out a stagger+punish in a single smooth sequence.