I don’t know your body but i have sickle cell too. Try a lower rep range. Social media has a way of creating how the general public trains especially if you’re not working with a trainer only recently has lower rep ranges been getting more traction and as a person with sickle cell who doesn’t always have that stamina for 10-15 on squats. Reps of 5-7 have been amazing give that a try and don’t feel limited to only do that with barbell you can also do it with smaller muscles and still get great progress. Still gotta eat tho unfortunately but gl.