You always add more ingredients to the recipe which changes it from what should have been a cake into a bean casserole...It's precisely because it's highly symbolic and allegorical that we need to be extremely careful not to add or subtract anything from it. And here's the key; your salvation has nothing whatever to do with understanding the Book of Revelation.
That's not how God judges you.
And if you decide "I better act like this, so that I'll be spared tribulation", that's probably the best way to get tribulation.
1 Corinthians 13:1 If I speak with the tongues of men, and of angels, and have not charity, I am become as sounding brass, or a tinkling cymbal. [2] And if I should have prophecy and should know all mysteries, and all knowledge, and if I should have all faith, so that I could remove mountains, and have not charity, I am nothing. [3] And if I should distribute all my goods to feed the poor, and if I should deliver my body to be burned, and have not charity, it profiteth me nothing.
It's not what you do or know, unless you have that love for others. Without that, all you do or know or believe is in vain. Love God, love your neighbor, and do what that agape directs you to do. Then you won't have to worry about beasts with odd number of horns and such. Yes, Revelation says that you will be judged by your works, and failing that, will be tossed into the lake of fire. But remember 1 Corinthians 13:1; if you don't have love, everything else is in vain.
Hear this, and you have nothing to worry about.
Let's focus....Strictly speaking of Revelation only!!!! The seven churches received a message....in it was a praise and a chastisement...then a warning to do this or that will happen...
So right off the bat your understanding is flawed in regards to warnings.
After addressing the 7 churches the Angel showed John all the things that would come upon man and earth when God begins to pour out His wrath.
Remember how evil the world has become in the sight of God....
2 Peter 2
4 For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment;
5 And spared not the old world, but saved Noah the eighth person, a preacher of righteousness, bringing in the flood upon the world of the ungodly;
6 And turning the cities of Sodom and Gomorrha into ashes condemned them with an overthrow, making them an ensample unto those that after should live ungodly;
7 And delivered just Lot, vexed with the filthy conversation of the wicked:
8 (For that righteous man dwelling among them, in seeing and hearing, vexed his righteous soul from day to day with their unlawful deeds;)
9 The Lord knoweth how to deliver the godly out of temptations, and to reserve the unjust unto the day of judgment to be punished:
10 But chiefly them that walk after the flesh in the lust of uncleanness, and despise government. Presumptuous are they, selfwilled, they are not afraid to speak evil of dignities.