Oh so that probably means that it's about finding the PPI that suits your body chemistry. Lansoprazole used to make me more dizzy and the GP had told me it gave more side effects.
The nervous system and stomach (and skin) are directly linked, hence why we get butterflies in stomach when nervous, or blush when embarrassed. It's not something you are mainly causing as it's probably volatile hormones plus some stressful thinking because you're frustrated by it.
The proton pump inhibitors halt the production of gastrin which is also a hormone so it can then affect other hormones separately as well as slowing digestion and encouraging bacterial imbalance in the gut. However, just see if you feel better with or without them especially if the reflux from the hernia is more the issue.
They took a while to leave my system so my stomach lining could heal but the rebound reflux and nausea from stopping was only for about 48 hours.
If you do try ACV or HCI supps or enzymes, make sure you take with your meal or just after eating as when you have gastritis they will just make it burn on an empty stomach until it's healed. Then you presume you are producing too much acid which isn't the case, it's just sore so even water irritates it. I was advised by GP to have things like Rubena instead of water as water is acidic and these drinks have acid regulators added to offset the sugar. I did find this worked better.