Feeling Frustrated with My Heart Diagnosis

hello I feel like my diagnosis was pushed onto me without much thought I have been having heart issues since 2016 it started with my heartrate being 100 and above 24/7 even with me resting I cant do any exercise because it causes it to go up even more and cause me to faint but now recently after yet another fainting episode where I feel into the road and nearly got run over and needed stitches my heart has suddenly started to worsen if its not above 100 its low 50s nearly Hitting 40s I am taking asprin currently I don't have insurance and I feel like my diagnosis is quite right I've been battling this for years trying to get answers with no luck and I feel my heart is starting to give out from the constant strain