Thank you! Im pretty sure they're these molds here: https://www.amazon.com/dp/B088PYB7L5/ref=cm_sw_r_cp_apa_fabc_GXQ4SYRAQJKF4H707AQN

Pretty much the same as the "wish" molds Rybonator used in his video.

They're a little wonky and I'm struggling with these voids that get left in thanks to the little fill holes. I don't have a pressure put and there's not much of a resevoir anyways.

I tried just overfilling these and it wasn't enough on some of them. I wound up with a sprue to cut off and sand down but on some the sprue came off and there was still a hole!

DIY Pressure pots (sealed bucket + bike pump): is there any variation on the pressure from a metal pot? I'm kind of worried that any kind of pressure will make the bucket pop during the curing period.

NO NO NO, do not do this, it is not safe.

You can use a proper metal pressure pot with a bike pump, you just need to add a schrader valve adapter. The pressure pots can be made safely for about $100 depending on current sales on materials.

I lived in an apartment building and used an airbrush compressor to pressurize my pot, it would run for about 15-20 minutes to pressurize it and then that was it, it was quiet, compact and did not need to be run again as my pot was put together with no leaks.

There are methods to avoid bubbles, like using thinner resin, warming your resin bottles in warm water, stirring carefully to avoid bubbles, etc.

You mention Amazon, if you're getting molds like this https://www.amazon.com/Casting-Standard-Triangle-Families-Handmade/dp/B088PYB7L5 you might as well not worry about the pressure pot for now, mess around with resin and worry about it later on.

If you're making your own molds, you can get away without a pressure pot for right now, just know that there's a pretty good chance that using molds not made in a pressure pot inside of one can cause some surface issues on the dice. But molds are consumables, they last 20-30 pulls or more depending on what silicone their made from, so I wouldn't worry too much as you'll need to make more molds eventually anyways.