It’s not really a case of too many questions, David, just perhaps the wrong sort of questions. I can fully understand you wanting phrases you haven’t come across in the course yet - that’s only natural - but remember, the things you want to say and can say in English have had decades of a head start, so there will always be phrases that are beyond you, especially in the first stages of learning a new language, and we all know that frustration! However, learning phrases “phrasebook” fashion to try and plug the gaps isn’t always a good idea in the long term. You are getting our written answers, but you’re not hearing them aloud, so you may find your brain will tend to pronounce new words “in English” and that begins a habit that’s hard to break. Also, as Hendrik said, trying to produce the sentences yourself is a huge, huge, part of the learning process and even any mistakes you make will add to that process in a positive way (I dare say we can all remember certain words or phrases better after making sometimes embarrassing mistakes with them! Or is that just me? )
It’s obvious that you’re really eager to be using Welsh in conversation as soon as and as much as possible, which really is fantastic, but you don’t need to try and run before you can walk. Using Welsh where you can, switching to English when you don’t have the Welsh words, and going back to Welsh as soon as possible is the key (and perfectly acceptable!), because I can guarantee (because it still happens to me after 20+ years!) that your brain will always be able to come up with a phrase in English that you just can’t match in Welsh, and I’ve even seen it happen to some of my Welsh 1st-language colleagues!