Making a first comic is always a bit scary. There are some things you could improve about this, but remember that the important thing is to keep trying! Everyone has things they could do better!
I appreciate that you're trying to get better at drawing things you're not confident at yet. That should definitely be your priority. Keep working at drawing environments, and at drawing not just faces, but full people. This will really help make the storytelling easier for the reader to follow, because a comic scene should ideally be structured like:
Introduce where the scene is taking place and who is there, with one or more panels that show a wide shot (as if we're looking from a distance) where we can see all the characters who are in that scene standing, walking, sitting, or whatever else they're doing, in that place. We call this an "establishing shot". Establishing shots are great because after you draw a good one, other panels in the scene only need a little bit of scenery and some panels don't need any at all.
Now your scenes can zoom in more onto the characters because we know where they are and who is there, but try not to make every shot zoomed right in on the face. Use close-ups on faces just for panels where the emotion or what that character alone is saying is really important. Other shots of people talking, it's usually best to mostly show both characters from about head to hips (this is called a "mid-shot). This helps the reader follow who is talking to whom and how they both feel about this conversation.
If you try to structure your scenes more like this, I think the readers will find it easier to follow what's going on, especially when you're jumping between times and locations so much. So just keep working at drawing people and environments and do your best to keep improving!