It would help to read the article before posting.
Bellingcat created 3-D models of the KH-101 missile and the US Aim-120 missile AND compared it with screenshot of the missile that destroyed the childrens hospital, showing that its a Russian KH-101 missile.
Left and right, 3D models created by Bellingcat of a Kh-101 and an AIM-120, respectively. Centre, a screenshot from a video showing the missile that hit the hospital. Note that the features of the missile that hit the hospital closely match those of the Kh-101, but not at all those of the AIM-120 model (Source:Michael Sheldon/Telegram)
You posted a picture of a missile with a Soviet bomber sitting behind it.