Tm alakazam?

I would swap it for a psychic charge move if you want to solo Machamp raids, but don't have the right team just yet to do so.

Keep in mind that it might take multiple TM's, since you could get either FS (psychic) or FB (fighting). And you could possibly toggle back and forth between the non-psychic attack moves several times.

It took me six charge TM's to get the move I wanted (SB) on my legacy SC Gengar, and so far I have spent seven charge TM's and still not gotten the charge move I want (DP) on my legacy KC Machamp.

If you don't yet have a good double psychic Alakazam, and you have a lot of TM's, it's worth considering, but just be aware of the risk.