You were told that a climbing plant that interests you likes full sun, but the best you can do is offer it shade? Don’t worry too much about that. Almost all climbers tolerate shade while in their juvenile phase; it’s when they reach adulthood that sun becomes necessary.
As long as the support you offer them to climb on (trellis, pergola, wall, tree, etc.) rises above the surrounding vegetation and other obstacles, your vine will climb it and eventually reach the sun it needs. You just have to be a bit patient!