TMS seemed to be pretty effective for me. It feels incredibly silly to have your brain zapped and is a big time commitment (30 days, 1X a day for 10 minutes) but I can't argue with the results.
Ketamine was something else. I did it intravenously, which seemed to be the best way to manage dosage but required going into a clinic. The biggest downside to the whole treatment is that you'll be very drowsy and sometimes down after, and all I wanted to do was go to bed. Taking the Uber home is not pleasant. The esketamine nasal sprays allow you to do it at home at lower dosages.
Once you get over the feeling of leaving your body, it can be quite nice. Overall, it led to unblocking some life time hold ups I had, and made me a better person. I had 5 sessions, 4 of them were overwhelmingly positive. The last was a dark couple hours where I hyperfocused on all my internal fears and failures. It also led to a lot of existential thoughts and questioning the fabric of reality which isn't all bad in small doses. I can see how excessive use could start to be counterproductive, it's good to stay connected to this reality. I don't understand how people use this as a party drug.
I would absolutely recommend it in a controlled setting for limited treatment, but would caution those with addictive personalities to be careful, not to see it as a silver bullet or a crutch, to make sure you're in a neutral mental space and that you're comfortable wherever you're doing it. In tandem, I listened to a fair amount of buddhist podcasts from Joseph Goldstein that helped build out the spiritual/learning side.
I'd like to see psylocibin treatment be more readily available at a lower price across the nation as an alternative.