I believe John saw all those things just the way he describes them. Some are almost indescribable. surreal even, but I know we're at the brink with AI, holograms and everything, that all these things could appear during the tribulation and wrath of God.
Rev. 1:2 Who bare record of the word of God, and of the testimony of Jesus Christ, and of all things that he saw.
So you think he saw an actual lamb opening the scroll?
How did the lamb take the scroll and open it with no fingers and thumbs?
Did it take it with it's mouth and then drop it and stomp it's tiny hoofs on the seals till they broke off?
Possibly.
Or he saw Jesus and is describing Him in theoretical imagery.
It starts out saying only the Lion of Judah can open it, and then has a Lamb opening it.
Revelation 5:5-9 ESV
(5) And one of the elders said to me, “Weep no more; behold, the Lion of the tribe of Judah, the Root of David, has conquered, so that he can open the scroll and its seven seals.”
(6) And between the throne and the four living creatures and among the elders I saw a Lamb standing, as though it had been slain, with seven horns and with seven eyes, which are the seven spirits of God sent out into all the earth.
(7) And he went and took the scroll from the right hand of him who was seated on the throne.
(8) And when he had taken the scroll, the four living creatures and the twenty-four elders fell down before the Lamb, each holding a harp, and golden bowls full of incense, which are the prayers of the saints.
(9) And they sang a new song, saying, “Worthy are you to take the scroll and to open its seals, for you were slain, and by your blood you ransomed people for God from every tribe and language and people and nation,
Same person with different imagery describing Him.