I don't see anything outstanding in your tests.

But you could try some things:

You could up the B12 a little and see if that helps. Only use the methyl form called methylcobalamin and at 1000mcg (mg) for a couple of months and see if you feel any improvement

It might prove useful to have the DNA test from 23 and Me...to see if you have any methylation errors. Over time here we've seen people testing positive for mutations on that test. One poster here Janieg had a big surprise from her test showing an omission of one gene involving the B vitamin Biotin. She is the first:
https://www.neurotalk.org/1238782-post301.html

Biotin is carried in the body by a transfer carrier molecule called the multivitamin transporter:
Sodium Dependent Multivitamin Transporter (SMVT): A Potential Target for Drug Delivery

Biotin is only one nutrient using this system. It may be bumped off by other nutrients, and all of them may be affected by others and a genetic error. So I think further research will reveal interactions with this transporter.

If you have the MTHFR mutation (there are 25 of these BTW) you will need methylfolate in addition to the methylB12.

Consider a food intolerance irritating you. MSG in processed foods irritates me significantly. There are drugs like statins and fluoroquinolone antibiotics which are neuropathy triggers among others. The nightshade food group is very irritating to some people. Peppers, hot sauces, even paprika and potatoes (which have solanine in them) can cause burning in some people.

If you have some error in your mitochondria...supporting those energy factories, can help. Foremost is l-carnitine. The HIV community knows this, and has been using it for decades now.
This nutrient is made by the body, but perhaps this fails with age or various toxin, drug damage as well,so using this may help.
Start at 250mg a day of acetyl carnitine, and raise by 250mg as needed after a week or so, up to 2 grams a day in divided doses.
Biotin up to 10mg a day works with the mitochondria too.

There is also Vitamin E. We have had one poster who posted about low impacting PN. This vitamin has little connection at this time here, but I am thinking that it can't hurt to try it using natural tocopherols in 400IU dose daily. Vit E works with vits A and C and works as an antioxidant to keep cells from damage.