How can I stop being rude at work? My coworker opened up to me about last time happened?

How can I stop being rude? At work they say I dont use po and opo thats how we show respect in philippines. I work at hospital and Im in information desk as a admin assistant and I assist people to write information of watchers and patients. I have social anxiety and last time the old lady I asked if she can still write because she's 60 something usually I assist old people and people with poor eyesight to write a form and she said she was offended by my question I didn't meant to say it rudely I was just concern about her.. for me to help her write the form if she can't see it. Im just sad because all my coworkers knows it now. All I know is we are all 4 duties there. Myabe my coworker who were duty that time told another coworker. They think Im rude now I remember I still apologized to that old lady and she said its okay to me. Then my coworker opened up to me about that situation. Like I wonder how did she found out. I really dont know. All I know is that I apologized to that old lady and I didn't mean asking her that question to insult her my coworker opened up to me about it and she said I should use better choice of words when speaking to people. But sometimes I can see why they see Im rude I dont use po and opo like we always should in our country to respect people regardless of age. I also remember calling Sir the man who wore lady dress and my coworker corrected me" I should call her maam to show respect " now I feel bad of myself I like working but because of that gossip I kinda losing interest of working there now. Even small mistakes will spread in our office and I wonder who always tell it. Maybe they just concern? Who knows? there's only one person who opened up to me about how I rudely treated visitors/people and I feel really bad and disappointed sad because they might fire me if they didn't like me at my job.
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16 d
Maybe its my tone?
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16 d
I really dont know too why my coworkers tell me to my other coworkers are they concern? Or do they want me to be out there? Im still new at my job and makes me feel bad about myself
How can I stop being rude at work? My coworker opened up to me about last time happened?
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