They can sometimes help, but forgiveness is a process that cannot be forced. Many people meet anger or grief first, and only later find softness or release. I cannot verify what you will experience, and it is never a guaranteed outcome.
MDMA often increases feelings of safety, trust, and empathy in the moment. That can make it easier to face painful material without shutting down, reduce defensiveness or shame, and open space for compassion toward yourself or others.
Psilocybin more often shifts perspective. People report less rumination, more big-picture insight, and a sense of connection or acceptance, which can support letting go. It can also surface difficult emotions, so pacing matters.
Whatever you choose, clarify your intention, attend to set and setting, and plan time to integrate afterward. If you want structured guidance and integration ideas, see Psychedelische Therapie Nederland.
Be patient and gentle with the process.