I really admire how much you are earnestly wanting to understand this book, but it's really important to be careful about interpreting Revelation, whether we're theologians or not. Just because an interpretation is "commonly accepted" doesn't mean it is inherently accurate.
Rv 22:18-19 is one of the clearer verses in the book that warns us that if someone adds to or subtracts from this book (Revelation), they cannot enter the Kingdom of Heaven.
It's good to read and be curious about it, but when it comes to understanding it, we can't just understand by thinking really hard on our own.
Similar to the Ethiopian, we should be able to say we don't understand if we don't understand and welcome Philip who can prove why he knows, clearly. But the reason why Philip understood isn't
because he studied really hard or learned from someone who received a certification. He knew what Isaiah was talking about because Jesus was the one who was able to prove himself as the fulfillment of the prophecy. Philip was one of the people who saw this, and spoke of what he saw, not what he thought or imagined. When it comes to prophecy in the Bible, we can't just understand until we see it or hear from someone who saw it and can explain clearly why it matches. And because this is God's word, only God allows that person to understand what they saw as well.
I do like your attitude to check if anything is missing though.
For example, someone who understands Revelation clearly should be able to tell us which wars, famines, and earthquakes Jesus warns about regarding his second coming in Matthew 24. Would it be literal? If so, which ones? How can we tell? If not literal, what would these mean? Can they verify with scripture? Even in Acts, one of the most noble groups of people who received the testimony of Jesus verified the testimony with scripture (the Berean Jews of Acts 17), with eagerness (rather than just judging, but confirming that they could understand clearly with scripture what they learned)
For the two beasts, are these literal? How would the ten horns be distributed between the seven heads? When talking about the seven heads too, they should fit the descriptions fully in Revelation 17 as well, which describes them as kings and hills and various other qualities of how they came about and even how the horns are described.
Are the letters sent to the literal 7 churches (does that make sense if Apostle John was actually a head pastor of one of these churches himself?) or does this mean something else? Why are the seven stars considered a mystery in Revelation 1 as well? Will we see floating bowls when Revelation fulfills, or does this have another meaning that we can confirm through the Bible?
I'm not trying to poke, and I'm not judging you~ I wish more of us were curious about this book of prophecy that remains for us like you are. But we should be shrewd as well as seeking, so that we don't add by accepting various interpretations, but also don't subtract by denying when the truth is able to be shown.
