Your diastolic blood pressure is low. Normal systolic blood pressure is between 90 and 139, and diastolic blood pressure is between 60 and 89. Hypotension can be seen in hypothyroidism, post-operative trauma, heart failure, etc. If you are always tired, you can check for an ultrasound to confirm the diagnosis.
At the same time, you can take high-quality protein, eat more fruits and vegetables, and exercise properly to raise your blood pressure. If you feel dizzy, palpitation, etc., you need to go to a cardiology clinic immediately.