I am sorry, but FFS will not be covered yet. There have been very rare cases where it was paid at least partially after the patients went to court over it.
Generally they do not like at all to pay procedures done outside of Germany, which means one is stuck with sub-standard procedures in many cases.
I am still going to court over my Yeson voice surgery because the option to do this in Germany meant having only 30% success rate and this was inacceptable.
Electrolysis can be paid for, but usually they will deny laser treatment, calling it "unproven to be permanent". For regular electrolysis they will often tell you that you can get it on insurance cost at a contracted medical professional. There are almost none though that do it that way, because the timeframe given to them to have it paid for by the insuracne is just a few minutes for each session, something they are not willing to deal with, so you would have to insist on doing the Electrolysis at a electrolysis professional, who cannot directly get paid by insurance. Sometimes the TK will grant you this, if you play it right; sometimes they will deny it or they will make you an offer to pay 50%.