My recommendation is to start researching V2Ray and XRay protocols and translate Chinese made tutorials. This seems to be the only protocol (under the xtls-vision-rpx) that works in GFW countries like Iran, Russia and China. Buy for a month a cheapish VPS and rent it for a month in a close country like Armenia/Caucasus Region, set up an XRAY server and then download Streisand for iOS or the equivalent in Android.

Also the Chinese GFW is not this titanic wall, there are well known exploits that use the 443 TLS port to masquerade as popular wesbites signatures.

If you need some guidance lmk I can write a full tutorial on how XRay/V2Ray works and how to set it up, as well as a series of scripts to generate stuff :)