Does each Buddha find a new path?
Each Buddha rediscovers the same path and the same truth all over again, on his own.
You can find this narrated in the Pali Canon for Vipassi Buddha (SN 12.4), Sikhi Buddha (SN 12.5), Vessabhu Buddha (SN 12.6), Kakusandha Buddha (SN 12.7), Konagamana Buddha (SN 12.8), Kassapa Buddha (SN 12.9) and of course, Gotama Buddha (SN 12.10).
Furthermore, the Buddha foretold the coming of the future Buddha, Metteyya Buddha or Maitreya Buddha in DN 26 - to do the same.