Do you ever consider that he doesn't want to clarify his comments and that we are not his intended audience? The Pope is an educated person and media savvy. He knows exactly what he is saying and always gives himself the cover of ambiguity.
In this case his comments were evidently pretty clear, they just got edited. From National Catholic Reporter of all places:
Analysis of a clip in a new documentary in which Pope Francis expresses support for civil union laws for same-sex couples appears to indicate some of the pontiff's words came from an earlier interview in which he also clearly said he does not approve of gay sexual relationships.
The clip in the new film, which is titled "Francesco" and premiered in Rome Oct. 21, seems to have been taken from a previous interview given to a TV journalist in 2019.
Although Francis did say in that television interview, as shown in the documentary, that gay people are "children of God" and "have a right to be part of the family," the pope also added: "That does not mean approving of homosexual acts, not in the least."
Regarding the "civil union," that does appear to be a mistranslation, whether intentional or not, who knows.
Perhaps the Pope thinks he's already been clear enough for those who care to know, and for those who don't it won't matter anyway. Tim Staples compiled this list:
The fact that we have a record of Pope Francis teaching and saying explicitly things like his statement in 2015 on the day after a “Gay Pride” march in Rome that children need moms and dads. And he defended marriage.
Children need heterosexual parents, Pope Francis says after gay pride march We have his statement on January 18 of 2015, saying, “the family is threatened by growing efforts on the part of some to redefine the very institution of marriage” and he condemned it. Two days earlier he said homosexual so-called marriage “disfigures God’s plan for creation.” Given this and his well-known declarations calling the adoption of children into gay “households” “child abuse,”
I would add to that in Amoris Laetitia he states:
In discussing the dignity and mission of the family, the Synod Fathers observed that, “as for proposals to place unions between homosexual persons on the same level as marriage, there are absolutely no grounds for considering homosexual unions to be in any way similar or even remotely analogous to God’s plan for marriage and family”. It is unacceptable “that local Churches should be subjected to pressure in this matter and that international bodies should make financial aid to poor countries dependent on the introduction of laws to establish 'marriage' between persons of the same sex"
It seems to me he's been clear on the issue and it's been shown that this report is false. I'm not sure why that's not the end of the story.