Anxiety attack and palpitations mood off

Hello doctors I am facing chronic anxiety issue from covid lockdowns with shortness of breathe and improper sleep.I did various test Hemoglobin sugar tsh cbc ecg on june 2020. Everything was normal. Ecg detected Sinus arrhythmia. But still I am facing palpitations extreme fears and anxiety attack monthly 2 to 3times. Infact I got it few days before also. I do google if I have some mild left shoulder pain or chest pain I start panicking and panic attacks happens to me .How will I get rid of it?My left side became very weak and tremors . After awakening from sleep every morning My pulse rate is between 70 to 88 and my bp stays within 117/78 . All day my pulse rate stays within 77 to 90. Or sometimes when I get more anxious it goes up 95 and  becomes 100+. But Palpitations just making me weak and less energetic. Now after doing small works my whole body shivers feel weak. Specially left side. What test do I need to do to rule out this? Its just 6months before I did most of the test.