You might be able to get a TE for your couple of 3*, but you wont be able to for your 2* or 1*.
A TE is equal to 300,000 to 500,000 luna depending on the person.
A 2* is about 5,000 luna
A 1* is about 1,000 luna
Level up your 3* and you can get 5 TE or so. A 4* maxed level can get around 15 TE on average.
Hope this helps!