You've got some research to do, huh? I know, and so will you once you actually read a care sheet or two. By the way, there's no such thing as a "Blue Tongue Lizard". There is, however, a Blue-Tongued Skink.
little insects
You can feed your wild lizard fruits, vegetables, and small fish as additional food sources besides bugs. It's important to research the specific dietary requirements of the lizard species to ensure it receives a balanced diet in captivity.
Blue tongued lizard
No!,,you should never keep blue tongue lizards together,(captive or wild). you should always stay away from wild lizards.
Blue belly lizards, also know as western fence lizards are not poisonous, but can bite. The only poisonous lizard in the US is the Gila monster, which live in desert areas, such as Joshua Tree, San Bernardino and few in Death Valley.
It depends on what kind of lizard it is, but most lizards are carnivorous. Unless it is an iguana you can first try crickets, and if that doesnt work, try mice.
To be honest, I would put it back. Without knowing exactly what species the lizard is, it is difficult to impossible to know exactly what you should feed it. In additon, wild lizards are acclimated to the wild and will rarely adapt well to an indoor environment. It's not going to make a good pet.
Bugs
Different lizard species have different lifespans.
Reptile Wild - 2001 Sri Lanka's Lizard King was released on: USA: 2002
You don't...its wild.
you have to win every game