Sects in islam or four imams(imam abu hanifa,imam shafi...... )?

Asalam u alaykum , as all of u r aware that our muslim society is divided into so many sects.And due to this, unity among the muslim ummah gets affected to a great deal .If u ask a person, who r u, he will not say i m a muslim but may say i m a hanfi or shafi or hambli or malki etc.We know these 4 imams were great but we should not commit taqleed(accepting the opinion of a person even he goes against the hadith etc.).Now let's annalyse.The hanfi's when they offer the salah,they put their hands below the chest.but when we come off the hadith of abu dawood,the prophit used to kept his hands on his chest.so while praying every muslim should keep his hands on his chest.That doesn't mean abu hanfi( may allah b pleased with him) was wrong.At that time hadith compilation wasn't there.Today science and technology iz advanced ,so every muslim is in such a position where can differentiate between the authentic and unauthentic hadith.Again, hanfi's don't say aamen loudly but the prophit used to say aamen loudly.so while praying we should say aamen loudly.Again prophet used to do rafa daen.so we should do rafa daen while praying. Every muslim should do rafadaen,say aamen loudly,keep his hands on chest not because imam shafi(may allah b pleased with him) said that, because our prophet(pbuh) said that.Again,according to shafi's when a woman touches a man, wudu breaks,but when we read the hadith, there it gets proved that physical touch doesn't break wudu.Here imam abuhanifa(may allah b pleased with him) was right.Even these great imams said that if u find any of our opinion which goes against allah or his rasool then reject our opinion.So all the muslim brothers and sisters are requested to follow the quran and sahih hadith and dont commit taqleed.