Ours runs on Ooredoo Tunisia. That is worth stating plainly, because almost no travel eSIM page tells you whose towers you are actually on, and in Tunisia the three networks are not equivalent once you leave the coast.
Tunisia has three operators: Ooredoo, Orange Tunisie and Tunisie Telecom. Ooredoo and Orange are the two most travellers end up on, and coverage between them is close in Tunis, Sousse, Hammamet and along the tourist coast. Tunisie Telecom, the former state operator, reaches further into the interior and the south.
For the trip most visitors take, which is Tunis plus the coast plus a run to the desert or to Kairouan, Ooredoo is a sound network and you are unlikely to notice a difference. If your trip is deep in the south, around Tataouine or the salt flats, expect thinner coverage on any network including a local one.