I constantly feel tightness in my chest like a...

What is the treatment of chest tightness?
The treatment depends on the cause, so you must visit a pulmonologist doctor to make the necessary tests, but the following can be used
take asthma medication such as Ventolin inhaler in case of bronchial asthma
iron, folic acid, or vitamin B12 pills if anemia, and take esomeprazole when acid reflux is present.
Take Lasix pills if there is edema on the lung as a result of heart , kidney or liver failure 
What are the necessary examinations in your case?
Clinical examination, chest x-ray,spirometry , blood test, vitamin B12 and folic acid level test
Echocardiogram, kidney function test, and liver function test
What are the causes of chest tightness?
    Anemia
    asthma
    Pulmonary edema
    Heart muscle failure
    Kidney failure
    acid reflux
What do I advise in your case?
I recommend visiting an internal and thoracic doctor to perform the necessary examinations and reach an appropriate diagnosis