I've taken it twice so far, to combat a complex drug habit/ addiction composed of copious amounts of psychedelics, dissociatives, pot, sometimes alcohol and stuff like kratom or phenibut. yes its ironic taking a psychedelic to get off psychedelics. It helped to some extent with my drug habit but not that much.
Both times I've taken it I havent experienced the vivid waking dream thing like talking to people from my life or anything, it was much more abstract and jumbled. In my most recent one i had some symbolic kindof experiences about dissociative drugs where i was floating through these future distopian slums/ wastelands and saw a pcp molecule carved into the wall. (dissociatives are probobly the drugs ive had the most severe addiction to) alot of the other stuff had this odd ringing noise and i would feel like i was moving very fast and somehow taken apart. Also as it was kicking in i'd see very realistic images of animals and bugs running around on the ceiling, they would fall twards me and right before they hit me they would be back on the ceiling! It's very odd, quite different from other psychedelics.
I wouldnt say it cures anxiety really, atleast in my experience. Its an extremely taxing experience on the mind and body (in your case monetarily too it sounds like). dont expect to feel normal for about a week or something. you see all of these weird blue flashes of light like electricity in your vision for several days after. So if you've tripped really hard a few times before you should be ok, but I dont know if its really worth the money to go to a clinic unless you have a serious physical addiction to something. Also it may be the case that high dose ibogaine actually causes some kind of brain damage.
For anxiety i'd really recommend zen meditation, its free and its very effective if you practice every day, probably a more reasonable option for you.