Hello Thiphauquea10
You have to contact the point of sales where you had acquired your tickets. If this was SBB, an international ticket can only be changed by contacting their SBB Contact Center (+41 51 225 78 56), or an counter agent.
To protect your privacy, we have deleted your ticket photos. You should never publish personal documents such as air tickets or train tickets on a public forum as they can be simply abused by crooks.
Kind regards,
Roland