Your assumptions are not accurate. You got responses from a handful of people, and we are all online.
You ALWAYS get to change your mind. It's YOURS, you can do whatever the hell you want with it. I have changed my mind and my career more times than I can count, and I am the happiest person in my entire social circle. Everybody notices it. Because I put no false expectations on life. You don't have to force yourself into a box, unless you want to be there.
You may need a change of scenery. Come to NY and you will see how friendly people are. Everyone is always so shocked when they come here from Europe or the South, thinking we are just mean bastards. But I've never known a city full of more open, open-minded and outgoing people.
(and regret is a wasted emotion. but if you are going to regret something, it's better to regret the things you didn
't do, not the things you did.)