There has not been much investigation into ISIS. They have caused so much death, destruction and ruined thousands and thousands of lives. Investigate the media that gave ISIS so much coverage on the main media showing them waving their flags and guns, riding in Toyota trucks as though it is some fun festival.
Did you see the damage done by ISIS in Marawi? Make a guess what kind of weapons were used on Marawi to cause that kind of damage. When ISIS comes, they are not just coming with machine guns. When ISIS comes, they will be coming with bombs, grenades and maybe even missile launchers etc.