There are deep states of meditation that are indescribably great and they are learnable
These states are typically called Jhanas. People who are not experienced meditators have successfully accessed them through self-study, retreats, and 1:1 tutors.
Self-study
Summary instructions
Video instruction
Other
Rob Burbea — 20 hours of recordings from 2019 Jhana retreat on YouTube, Dharma Seed, full transcript, epub file of transcript, ChatGPT summary of instructions
The Way app includes absorption practice on their path but is not the focus and takes a while to get to