Foreigners in Poland who aren't learning Polish, do you feel comfortable here?

I've been living in Poland for 2.5 years. Moved here without knowing the language, and am a native English speaker. I started taking classes a few months after I got here and am currently A2 level. Although I feel as though I'm regressing. It takes so long to make any sort of progress. It's very demoralising.

I see comments from people who don't know any Polish besides basic pleasantries, and they don't seem phased by this. So I want to know, what's the secret to feeling this way? It looks like such a blissful existence, and part of me wonders if I should adopt the same approach - throw out my Polish textbooks and just say "Hello!" everytime I walk into a restaurant. I feel so out of place and very much "other" here, and not knowing the language has really amplified these feelings.

Ultimately I'm going to keep learning because what choice do I have, but I'd like for the language aspect to bother me less. It's stopping me from doing things here and really enjoying my time in Poland. Any advice is appreciated!