For the past ~5.45 hours, I tried assembling parts once again, but I failed multiple times due to either one of my solders being broken, or ESP32 having power issues. After a long time of fixing, I gave up on using the power source while debugging, and I got the circuit to work on direct USB connection, so I narrowed it down to a problem caused by the battery, and my measurements with the multimeter confirmed that some of the voltage I gave was missing, thus causing ESP32 to rapidly open and close, and for blank white slots to appear on the LCD. I also wrote the code for the top part, and I got the MAC addresses of the ESP32s, so they can communicate now. Another thing to mention is that even in the slots of the power rail of the breadboard, the missing voltage is seen, so I am going to take another approach, and test elements one after another, but not individually since they all work individually.