You can experience deeper states of meditation (Nimitta and Jhana) but you can't get there by wanting. Ajahn Brahm explains how our desire to achieve deeper state of meditation actually prevents us from experiencing them. Ajahn explains the landmarks, the signs that you can be aware of to make sure that you are heading in the right direction toward deeper peace.
To find and download more precious Dhamma teachings, visit the BSWA teachings page: https://bswa.org/teachings/, choose the teaching you want and click on the audio to open it up on Podbean.
Please support the BSWA in making teachings available for free online via Patreon.