This is too big for a bike, but I self host Traccar, and installed Sinotrack st901 in my cars years ago. SIM card cost is about 50 cents a month each.

Edit: check Mictrak MT710

What do you mean with sensor turning up on in grafana?

I have been using it for ~10 months already with not a single issue. Debian moves very slow and by the time an official release is issued some packages are already old.