Keep in mind that a) English is remarkably difficult, owing to irregular spellings, thousands of words derived from other languages, and speech full of contractions & idioms that don’t necessarily appear in standard written English, and b) those native speakers probably don’t have native fluency in another language. Learning a language is all about forging ahead through errors. Please keep making errors! It’s how you’ll improve. (BTW… I think you might have meant “bungling,” not “bubbling,” but I really like the sound of bubbling!)