Before meeting someone, and especially when traveling overseas to meet someone, you should leave a clear record of where you will be. This is not the time to evasive or elusive.
Talk with your friends and family before you travel to give them a rough timeline of your plans. Let them know how often you will try to check in. Then create a plan with them on what they should do if they don’t hear from you.
Do NOT trust someone at face value. You should do some research to know not only who the person you are meeting is but learn about the place you are going.
Most countries have a program in place for citizens to register when they are traveling abroad. Do it and keep the information updated.
If your family is unsure where you are or if you are in need of assistance, your government needs to have as much information about you as possible to help find you.