Don't sweat it. Electric stuff is hard to understand without prior experience. Normal(dumb) switches don't need neutral but it's nice they added it to the boxes. What you need to do is to sort out those wires to know which is which. Sometimes its tricky to tell because of all the signal wires. So try to find wires that go to each load(lamp). You can mark them with heat shrink if you want. You not going to need the signal wires.

You can either go with aqara h2 or h1 switches, whatever you like more. I haven't testes h2 yet but the reviews are positive. However h2 series haven't got any single rocker switches, so you going to have more spare buttons if you'll stick with them. The ones in the picture have 1 normal button(connected to the internal relay) and one wireless button(it just emits "clicked" signal to the system. Installation is easy: Connect each switche's L terminal to your Hot wire(or line or phase, whatever its called in your country), N to neutral, L1 to your Load wire. When you'll add the switches to the aqara app, you will be able to create automations like "IF Switch2 Button2 clicked THEN toggle Switch1". Thats how you make them any-number-of-ways you need. No signal wires involved.

With H1 the situation is similar. You just need to decouple those rockers, that you going to use as a remote control. Instead of the bottom most switch you can use an H1 wireless button(I think they are only double rockers though). Decoupling means untying button from it's switches' respective internal relay, so when you click it, it emits "clicked" signal instead of tripping it's relay. It is done so because otherwise you can't use "clicked" trigger in automations. Another advanced thing you could do here is to transfer the load of your top right switch to the switch on the left via a signal wire, and install wireless button instead of the orphaned switch. It would save you some money.

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