Yes, we all know that a YBR 125 is underpowed. All four stroke 125s are like that. Even the sports 125's top out 70 ish. I've taken to having breakfast after I get to University for instance...
They make up for it with the fuel economy, which I suspect you made good use of. My CBR 125F had to be filled up for the first time this month yesterday. And very good handling.
125's have two choices. two stroke speed, and the ever present risk of it breaking down, or 4 stroke slowness, and the brilliant fuel economy, and reliability.
They don't make them as good as a 125 could be because then people would stick with the first bike/bikes, and manufacturers want to sell the bigger stuff.
You could do 90 mph top speeds, with 80+ mpg no problem. Get a RS 125, stick washers in exhaust, slow it down a little, remember your paying the petrol/2T oil bill.
Anyway, at 17/18/19, you run what you can afford and like.
Hence the reason why my RS 125 is sitting in a heated garage, waiting for my brother to get some money together for insurance, and the 2T oil bill.
All you really need is a 4T 125 for the City, and a 2T 125 for the deserted backroads.
Anyway, back to topic, well done for passing module 1. Its the nicer one coming next.