I unfortunately have a lot of experience with anxiety, and I have researched this area a lot. Anxiety like everything else is a result of a combination of genetic and environmental factors.
Yes, you have some SNPs that could be implicated in anxiety - MTHFR, MTR and MTRR would inhibit methylation somewhat. If you have bipolar type anxiety, the COMT could be an actor. Methylation inhibition causes lower levels neurotransmitters like serotonin, and that can cause anxiety.
Methylation can also be inhibited by mercury and lead. You can see this on Ben Lynch's Strategene report.
If you do Sterling's Report from MTHFRsupport, you can see GAD genes. Those control the GABA/glutamate ratio. Mine lights up like a red Christmas tree.
The overall GABA/glutamate levels can be low (caused by methylation inhibition of neurotransmitters), and the ratio can be reversed, causing anxiety, caused by mercury. I'm not sure if you could have enough GAD mutations to cause this to happen without mercury. My ratio has gotten better as I've gotten rid of mercury.
The adrenals can also be a player. Either high or low cortisol can cause anxiety. Mercury also negatively impacts the adrenals. Long term stress, lots of coffee or energy drinks, etc. are bad too.
Having done various tests including the Nutreval - for mental health, my suggestion would be to get a Neuroadrenal profile. This includes both neurotransmitters levels and the GABA/glutamate balance and a 24 hour cortisol saliva test.
You can get one from Integrative Psychiatry.net. Then buy the consultation from the nurse practitioner and get supplement suggestions.
Or you can simply experiment with something to raise serotonin such as 5htp or inositol, and take GABA or theanine to see if that helps calm the glutamate. Then also eliminate all processed foods from your diet (50% of them contain MSG) and also avoid tomatoes, mushrooms and Parmesan cheese, and anything with umami like fish sauce - those contain a high amount of natural glutamates.
For the adrenals, I would not do supplementation unless you have a test to see if they're high or low. Then if so, supplement to bring those to normal.
I would also try some magnesium supplementation as that is calming and is a co-factor for methylation and many other processes in the body and is often deficient.
Then once you feel better, I suggest looking at toxic metals like mercury and lead to see if those are the underlying issue. The best and safest chelation protocol I have found is the Cutler Frequent Dose Chelation protocol. I have a link to that in my signature link.