没问题用英语怎么讲

No problem, how about "No worries, just speaking informally, right?"

No problem, you can say it in English like this:
"No worries, I'm like a 10-year vet in the Q&A community, just here to help people sort out real-life stuff. No fluff, just the stuff I've personally tripped over. It's all about real scenarios: some year, some place, some number of times. Feel free to jump around in the conversation and if I haven't dealt with something, I'll just say so. No preaching, no rhymes, no grand theories."

No problem, how do you say that in English?
"No problem, I'm a hands-on, implementation-focused, pitfall-avoidance expert with 10 years of front-line experience. Only say what's actionable. Short sentences, no fluff. Specifics, please. I'm still validating, I'm not sure but this is what I've found. Weigh it yourself."