Here are Grokker collections for four super-popular YouTube yoga teachers with soothing teaching styles. Best wishes!
Adrience Mishler https://grokker.com/fitness/collection/yoga-with-adriene-mishler/6009c7453fa6704a3439b548
Esther Ekhart https://grokker.com/yoga/collection/yoga-with-esther-ekhart-of-ekhart-yoga-and-yogatic/600923e63fa6704a3438c609
Candace Cabrera https://grokker.com/yoga/collection/yoga-by-candace-cabrera-moore-tavino/5fffcbcadb8e8d4f07e52ad8
Tara Stiles https://grokker.com/yoga/collection/yoga-with-tara-stiles/60061be12321c749b61acbcc
Please consult your medical doctor for suggestions. Maybe you might find something you enjoy in these collections.
Pilates might be helfpul, because so many pilates exercises are performed prone on the tush/back. Best wishes!
Pilates https://grokker.com/fitness/collection/pilates/605edf53c1a5914c330396b3
Gentle Yoga https://grokker.com/yoga/collection/gentle-yoga/603f6d0ab356ab7d31b8bc7a
Mobility, Recovery, Physical Therapy https://grokker.com/yoga/collection/mobility-recovery-physical-therapy/603eb9efb356ab7d31b83fa0
Qigong and Taoflow https://grokker.com/yoga/collection/qigong-and-taoflow/603ea838b356ab7d31b81cf2
Breathing, Meditation, Pep Talks https://grokker.com/mind/collection/breathing-meditation-pep-talks/603a8adab356ab7d31b44f1e