Welcome to the board, although I'm sorry for the reason you're here.
I figure your doctor is mainly focussing on TSH which is indeed in a good place, but it does not tell us all. Total T4 is a useless test. Free T4 is a good one and that shows that your FT4 is quite low (sure within ranges but near bottom). FT4 (together with FT3 - next time you might ask your doctor to have that one tested too) are the actual thyroid hormone levels (contrary to the TSH which is thyroid stimulating hormone produced by the pituitary gland).
When the free levels (FT4 and FT3) fall too low for the body's needs that will cause symptoms (and most of the times that will be accompanied with an increased TSH but not always). Likely your FT4 is too low for your body's needs and causing symptoms.
Most people need their free levels at least midrange or higher.
Next time you might also consider having your thyroid antibodies tested (antiThryglobuline and antiTPO) if you'd have those, might be easier to receive treatment.