I think you are right about the "feeling foolish" part. I did 'O' level French at school and I remember a young man asking me if I spoke French and I stood grounded to the spot and said "Non" quite firmly. He proceded to speak to me in broken English which I could have easily matched in broken French. I was about 19 years old and I have never forgotten it.
I am now at an age where that element has passed and I stand with a large English/Turkish dictionary having charades type conversations with the gardener, and there is a lot of laughing at the same time. He eventually gives in and gets a Turkish schoolchild to talk to me in school English (which is very good). In fact it got even funnier once when he got another gardener to help and he spoke German and Turkish and proceeded collected a Dutch couple who spoke everything under the sun.
My husband is still a bit shy and when I first taught him important words like "hesap lutfen", he held back until he finally uttered them and found out people knew what he meant. He was inspired and now "merhabas" everyone in sight including the dogs - as they are obvoiusly Turkish as well. Small beginnings but we will gradually pick some more up as confidence grows.
The funny thing we have found is that where we live, there are many Turkish people whe we "Gunayden" (pardon spelling) and they "Good Morning". There are some German people who we "good morning" and they "Gunayden".
A lovely cheery bunch we all are
TeresaX