Low aldosterone, normal renin. Sodium 141 (135-145), potassium 3.4 (3.5-5.0) confused, shouldnt sodium be lower if low aldosterone and potassium higher?

Sodium is difficult. Sodium regulation is complex and not directly related to any single hormone. Mineralocorticoids like Fludrocortisone can increase sodium a bit and do cause sodium retention of sodium, but the sodium level is mostly regulated by a hormone called adh (vasopressin).