The “thmyl lbt” could be a corrupted filename from a ROM hack site (e.g., thmyl_lbt_beyblade_burst_battle_zero_switch_ns.3ds ), pointing to a modified version with unlockable characters or a “Learning Battle Trainer” mode. Without clearer context, we’ll focus on the gameplay tactic.
"NS" is the standard abbreviation for the Nintendo Switch. The inclusion of "Switch NS" in the search thmyl lbt Beyblade burst battle zero switch ns...