Pimples. Meds i don't know what to do.

I consult many dermas and they did everything like isotretenoin and azithromicin coarse but the acne didn't stop completely. There were less pimples before this treatment . But now all the face is covered up with pimples and red marks ,left after the pimples 'what to do with these marks . Seriously lost my trust from these medications. They have given me clinsol for the marks i am using all these creams from like 2 years first doctor given me persol and faceclin second doctor given me isotretenoin and azithromicin and clindoxyl gel third doctor given me a ret gel momate f cream saslic facewash . 4th doctor given me ts tox id and clindamycin phosphate gel . Totally fed up with all these meds I don't know what to do .