Altered states help

so nowadays while i trying to meditate and reach theta gamma state , i am not feeling like its is deep even i am not getting any others thoughts and also when i get up it doesnt seem like the state i reached while meditating is different from normal state.its confusing i am clueless about what is happening,any help about it?

so i am also like noticing smoke normally even if there is source of none and when i try to concentrate on it it dissapears