Found 3 alternatives for ESP32-C3FN4 by Espressif Systems. Rf Transceiver Modules And Modems — 32-VFQFN Exposed Pad.
SMD IC ESP32-C3FH4, SINGLE-CORE
SMD IC ESP32-C3, SINGLE-CORE MCU
SMD MOD 4MB SPI FLSH PCB ANT -40