Travel with 2 devices
one dumb phone with almost fake contacts (do not reuse an used dumb phone because deleted data can be recovered with physical extraction and it's not easy to properly overwrite data on them) you don't want to be associated with a drug dealer if the phone is from second hand market.
one empty google pixel with stock OS (GrapheneOS will rise suspicion)
All important data will be in the cloud. Do not trust cloud providers zero knowledge encryption and encrypt your data locally before to upload.
Password to encrypt your data on your computer or phone must be different from the one you will use to access that data in the cloud.
Once safe at home, install GrapheneOS and set your pixel again. Not convenient but it's the best thing to do.
Don't send your phone with data through post, it's risky. Package can be lost, stolen or confiscated.