1 Thessalonians does not teach the rapture at all, especially not a pre-trib rapture. This book speaks specifically of the Second Coming, and that is only going to occur once.
The dead in Christ will rise first. Then we who are alive and remain will be caught up & be forever with the Lord. It can’t be any clearer than that.
15For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep.
16For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
17Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.
18Wherefore comfort one another with these words.
ROTFLOL.