The rapture occurs before his return after the tribulation period. That’s when the millenial reign begins. Jesus does not return to earth immediately after the rapture.
Tribulation? Yes. Rapture? No. The very fact there is no rapture may be one of the reasons men will see the things occur and curse God. The doctrine of the rapture is not scriptural. There’s an abundance of scriptural evidence to support Christians being here for the tribulation.