Inability to Speak Native Tongue Fluently?

Whenever I speak with family members in my home country, I have a tendency to mix English with the Filipino language whenever I'm not sure what the translation is. I sometimes feel out of place when I do so, but a few of my cousins told me that they thought it was fine. Otherwise, I can fully understand the language, so it's not uncommon to see me having a conversation that involves a family member speaking to me in Tagalog and me responding back in English. We're able to understand each other just fine.

For the older relatives, I try to eliminate English as much as possible since not all of them can understand it.

How ya doing, buddy?