will no longer be developed further! Use https://github.com/martin-ger/esp32_nat_router or https://github.com/martin-ger/esp_wifi_repeater ! - His firmware is a better choice!

WiFi Repeater Using ESP32 This guide will walk you through designing and building a WiFi repeater using the ESP32 microcontroller. The ESP32 can act as both a Wi-Fi client and an access point (AP), enabling it to receive and rebroadcast a Wi-Fi signal, effectively extending the coverage area.

Lightweight ESP32 WiFi repeater using ESPHome with OTA support and documented configuration

WIfI Repeater using ESP32