"Did you like it? Goo! Did you donate? Goo! Did you add it to favorite? Goo!" - streamers' phrases.
"Goo!"
"Long press the button for 3 actions!" - another streamers' phrase. Explanation: on Bilibili a viewer can press and hold a button to perform three actions at once: to like, to add to favorite, and to donate to a streamer.
"It's not like I don't have little girls! But, if possible, I'd like to protect beautiful girls! Goo!" - no idea what this means (and whether this translation is on point). I think this might be some kind of phrase said by some Chinese streamer that was made into a meme. That's why I replaced it with "Woo yeah baby, that's what I've been waiting for!"
"Update! Update! Dan-dan-dan! Goo!" - said by the viewers who beg for updates (like on manga websites "Where is the next chapter?!"). "Dan-dan-dan" is some Chinese media website with memes and user-generated content. Some streamers might be using it for self-promotion.
"Fill that thumbs up gauge! Goo!" - streamer encourages viewers to click sort of "like" buttons. Clicking these buttons fills the gauge that's displayed to everyone.