Varicella igg low - paranoid? Prevention?

My varicella igg came back at 0.77 (less than 1 indicates lack of immunity to chickenpox/shingles exposure).

I was vaccinated normally and completely as a kid but for some reason I got this result.

I'm now anxious about catching something. Especially from two groups: 1) my in-laws who are anti vax (we don't see them often) and 2) people at my church who may not be vaxxed (ex. Last year, one girl in my bible study group found out that she was never vaxxed as a kid, did have chickenpox back then, and then got shingles last year in her 30s. She told us later because she didn't know it was shingles at the time she was contagious.)

I'm also worried about catching it in general from some other source (travel, etc). Should I just mask up everywhere?

Advice? Wwyd if you were in my position?