Please inform me if really some of them are dangerous!
Thanks your cooperationí4
Besides the error during check when scanning download directories, the rest of the scan results are just usage tracks or under browser category, which aren't dangerous. :) Here's a webpage about usage tracks:
https://www.safer-networking.org/faq/usage-tracks/
Here it is in hungarian:
https://translate.googleusercontent.com/translate_c?act=url&depth=1&hl=en&ie=UTF8&prev=_t&rurl=translate.google.ca&sl=auto&sp=nmt4&tl=hu&u=https://www.safer-networking.org/faq/usage-tracks/&usg=ALkJrhhHatgwtN2agOua0WsIpbA7gl33JQ