The wrath of God is the entire seven year period. From Revelation 4 the "church" is gone. After finishing with warning the seven churches in chapter 3 after which they are not seen again, chapter 4 starts with "“Come up here, and I will show you what must take place after this.” After what? After the faithful believers are gone from the earth. Those that were not but realized after the disappearance of millions are the "tribulations saints" who then become believers and who are beheaded. The wrath of God begins with the opening of the first seal.
After finishing with warning the seven churches in chapter 3 after which they are not seen again, chapter 4 starts with ““Come up here, and I will show you what must take place after this.” After what? After the faithful believers are gone from the earth.
And just because something is not “seen immediately” in following verses does not mean it is not there. It can (and usually does) mean the writer has moved on to a different topic. Unless, of course, the writer explicitly SAYS the thing is not there, which it doesn’t.
These are the original arguments used when I first became a Christian in 1981 to “prove” to me a pre-trib rapture. It was taught at length at my church and Sunday school. I then studied it myself a few years later. It drastically changed my position on the subject but, even more, it made me realize that none of us really know. We only speculate, and often on ridiculously scant information.
We all do it. It’s just easier for me to see when someone else does it than when I do it. ;-)