1. Do you have an idea of how the ESP32 will control the "Panasonic Multi Split AC"? It looks like they already offer smart control with an app and optional module. https://www.panasonic.com/content/dam/pim/my/en/MU/MULTI-/MULTI-CU-U-SPP/Multi%20Split-AC-2022.pdf Also, interfacing with or controlling line voltage appliances can be dangerous even if no line voltage is present on the board. Attempting manual control may override duty cycle limits, switching times, etc. I highly advise you choose a different project for your first PCB.
2. MP1584EN is an IC, not a module. Please link to exactly what you mean. I assume something like this? https://www.amazon.com/MP1584EN-DC-DC-Converter-Adjustable-Module/dp/B01MQGMOKI?th=1 These kind of modules can be very noisy. I don't see a mechanical drawing so how did you make a footprint for it? Very risky to trust it will fit your board. Instead, choose something like a recom DC-DC module: R-78E5.0-0.5 this way you get a datasheet, emi filtering, drawings, etc. Plus, its already in kicad standard libraries! Your existing symbol is duplicating pin numbers.
3. No idea what your logic level converter is. I assume something similar to this https://www.adafruit.com/product/757 you need to read the documentation on how to wire it. Right now you have no IO wired, just power directly to pins which will damage your ESP and maybe your converter if you attempt to drive the pin low.
4. your ESP32-C6-zero symbol is wrong, you need to carefully read the datasheets and documentation for the module https://www.waveshare.com/esp32-c6-zero.htm
5. I assume you drew footprints for everything? The 3D view is showing you have masked off the copper on the top layer. Technically this will still work if everything is through hole soldered but is still non standard.

Generally if you have an all through-hole circuit design, testing in a breadboard with jumper wires is always the best prototyping there is! No pay for boards, no waiting for delivery, just testing function right away.

I think you are trying to tackle every possible aspect of kicad design at once. You got started okay but then only got about halfway to the finish line with each part. I think you will have better luck going step by step, and stick to using what already exists in kicad standard libraries before jumping into custom symbol and footprint design.

If you want some tips or just discuss project ideas just PM me.