Facebook pixel event matching expert

We have connected a woocommerce store with the Facebook pixel, to improve tracking we install pixel your site tracking each event with its parameters, we have selected and made Facebook recommendations, we not only install a plugin to install (we have knowledge of programming ), however it does not improve the coincidence of events and it is very important, now we have implemented the connection with tag manager, which allows better handling of events and still does not improve, we need an expert and we rectify that EXPERT, because if we know more than the freelancer we do not want to waste time, the work will be compensated without problem and contact will be maintained for any future issue.