Safety? Touchback? I dont get it?

So if the QB has the ball and gets sacked in the end zone it’s two points…
But if a kick returner gets tackled in the endzone it’s one point.
What if the kick returner crosses the goal line into normal playing field but gets tackled in the end zone running backwards? Is that two points?
If a defense intercepts a TD pass, but gets tackled in the end zone its… umm… 1 point? or none?

What if a kicker is blocked kicking a punt in his own endzone, but manages to recover the ball and is tackled in his own end-zone?
I am not seeing a pattern of consistency on the scoring you give up going down in your own end zone…
Someone please clarify, and if possible, provide the theory behind the scoring scheme?

Article 3 – Safety Touch
A safety touch is scored when the ball becomes dead in the possession of a team
in its own Goal Area, or touches or crosses the Dead Line or a Sideline in Goal as
a result of the ball having been carried, kicked, fumbled or otherwise directed from
the Field of Play into the Goal Area by the team scored against, or as a direct result
of a kick from scrimmage having been blocked in the Field of Play or Goal Area.

Article 4 – Single Point Or Rouge
If the ball is kicked into the Goal Area by an opponent, a rouge is scored:
(1) when the ball becomes dead in possession of a team in its own Goal Area or,
(2) when the ball touches or crosses the Dead Line or a Sideline in Goal, and
touches the ground, a player or some object beyond these lines.
AR: Team A kicks to Team B. B1 attempting to catch the ball on Team B’s 3-yard
line, fumbles it and is tackled with the ball in possession in the Team B Goal Area.
RULING – Rouge (ball deemed to have been kicked into Goal Area by Team A).
AR: Team A kicks to Team B. B1 catches the ball in the Field of Play while moving
towards own Goal Line and, in the judgment of the official, the momentum carries B1
into own Goal Area. RULING – Rouge (possession deemed to have been gained in
the Goal Area).
After a rouge, the team scored against shall next put the ball into play by a scrimmage
as first down at any point between the hash marks on its 35-yard line.
If the single point was scored as the result of an unsuccessful field goal attempt, the
team scored against may elect to scrimmage the ball at any point between the hash
marks on its own 35-yard line or at the previous line of scrimmage.
NOTE: For the purposes of this Article, a drop kick or place kick shall, without
exception, be deemed to be a field goal attempt.
NOTE: If during a kickoff, the kicked ball proceeds through the Goal Area and across
the Dead Line or Sideline in Goal without being touched, there shall be no score and
the ball shall be awarded to the receiving team at any point between the hash marks
on its own 25-yard line

Simply put: There are multiple ways to score in the CFL (touchdown, safety, kicking (with variations for punt, field-goal and kick-off), the OP is confusing two of them.

  1. A Safety (2 points) is essentially scored by the defence, it is two points lost by the offence for stranding the ball in their own end zone.

  2. A single or rouge is scored by the kick into the end zone. The kick receiving team can negate the rouge by returning the ball out of the end zone since the ball is live until it goes out of bounds or the play stops (ball carrier downed by contact or concedes). Regardless, the point is given for kicking the ball into the end zone.

They are both very different. The only way to give up a safety is if you started outside of your endzone, but you end up getting tackled or taking a knee in our own endzone.

in canadian football anytime a ball is kicked into the end zone and the receiving team fails to take it out of the end zone it is called a rouge = 1 pt, that is why in a tied game if one team is going to punt into the end zone the other team will put their punter in the end zone to kick the ball out, on the other hand if the returner had taken the ball out then ran parallel to the goal line and slipped back into the end zone where he is tackled that would be a safety = 2pt.
I think its a good rule except when going for a field goal which goes wide in that case you get 1 pt I think the rule on field goals should be no points on bad FG attempts and the other team get the ball back at the point the attempt was made from, and if inside the 20 the other team gets it on the 20.