i new in final cut pro
i only used the "b" ( blade ) key
in the time line to cut clip to 2 parts
than delete the second p[art
than export the clip (part 1 the of original clip)
that all i know of final cut pro
now i need something else
i need to cut the original clip to 2 parts
than i need to export 2 parts as different mp4 files to folder
Use the "R" key to draw a yellow range box in the timeline for the part you want to export. Then do File>Share, etc. and it will only export the portion highlighted by the range box. You can then do that on other portions.
In FCPX the optimal workflow is spend lots of time in the Event Browser marking favorites, rejects and keywords. Then use the various filters to hide rejects, show favorites, show keyword collections, etc. For multicam or material with external audio that should all be synced in the Event Browser, not on the timeline.
Only after careful organization and curation of the material do you move to the timeline stage of editing.