Give e Metahumane a face from an single portrait image without Facebuilder

Two years ago, I used the facebuilder plugin in Blender to import two or three faces in a project using a single still-image portrait , I assume no AI was involved - and it cost me nothing. Today I have to pay a monthly fee of EUR 20 for the same action - not a bunch of faces, just a few a year - at most, a cost I’m not able, nor willing to pay. So I am looking for a free alternative. If it can be done using Unreal (any 5.x version) that has my preference but if Blender is involved to do some simple adjustments, that is OK too. BTW: Just the face. No animations (for now).