Ryanair make very clear they are a point-to-point airline - it's
Article 17 of their General terms & conditions of carriage:
Article 17 - Point-to-point airline
We are a ‘point-to-point' airline. We therefore do not offer, and cannot facilitate, the transfer of passengers or their baggage to other flights, whether operated by ourselves or by other carriers.
Their
FAQ answer on connecting flights reiterates this policy.
To be fair, this isn't a Ryanair-only oddity - most other LCCs operate the same point-to-point philosophy.