Some people have consumed it raw, traditionally it is not purified AFAIK.
However bufotenin is not that safe, you can look up how they do it in the Amazonian forest, but it will not be pleasant.
It is said that it heals a lot of diseases, but thus hasn't been proven.
A strong purge will happen, and mentally it will be unpredictable.
I would suggest to not do it, and uf you do it, be really careful.
I cannot give you tips because I didn't try it, but seeing what I have saw, I would advise you to do your research, and if you conclude it to be risky, don't do it.