Cute little game! I liked the description a lot, was well written and funny!
I think I might disagree a bit with some of the other comments, I found having to click the robot to be a small part of the game, since you would need to keep track of where he is. I think it would just help if his hitbox was larger, so you didn't have to be precise with the clicks.
Game like this, (I'm thinking overcooked, or other "manage customer orders" games) are at their best when the pace is very hectic but remains manageable. When you are just barely keeping up with all of your ability. I think that is lacking within this, since the robot moves at a fixed pace. Most of the time you spend is looking for the item, but once you've done that you just wait.
I think looking for the items around the room is a cool idea, since its a unique addition to the genre. But, I think that some of the pixel art needs to be changed, since sometimes the requested item would look a lot like decoration (mostly the paper).
I think that the bubbles could be more noticeable, since even when I was trying to watching over the whole room I would still miss them coming up. Maybe have some sort of small alert or animation for then appearing, since they should be easily noticed even when not paying attention to them.
I think having more time between bubbles would help, since it feels very precise right now. But you've said you wanted to have multiple robots, and I think that would be a great addition. Maybe having different robots only able to do specific tasks, so you have to watch over where all of them are and micro-manage all of them.
Maybe having only some robots able to do a specific task that is only on one side of the room. But if they aren't doing their task, they will wander around. So you need to also keep moving them back near their zone so they don't get too far away for when you do need them.
Just some random ideas, nice job!