If your cards look like this then they are legit game cards but from the old Digimon TCG that was discontinued several years ago. The current TCG was released in 2020 along with the reboot of the Digimon Adventure anime.
I was also more of a Digimon kid than a Pokémon kid growing up, so it brings me much joy that the current TCG is actually picking up steam internationally. Hopefully the franchise keeps flourishing because it really deserves it.