Re: Generally never a right time to buy for lots of stuff
" both sides generally _can_ pull out of a property sale" Tell me about it. We are in the process of moving. Before Xmas, we had accepted an offer on our house, and had an offer accepted on a house we wanted to buy, so all good. Then our buyer got cold feet, and pulled out. Now our vendor has put their house back on the market as we are no longer under offer, and they are impatient. So we could lose the house, but will still have to pay our solicitor for the work they have done, so could be out a few grand. Plus we rented a shipping container to store stuff to make moving day less of a hassle. So I'm getting rained on by both parties.
Sorry you got caught in this mess.
INAL, but isn't there some provision for damages from your cold feet buyer? Either an escrow of enough earnest money on deposit to make you whole if the buyer backs out, or what Musk ran into, "specific performance", a court ordering the buyer to complete the purchase unwilling or not. As to the seller backing out, depends on the contingencies in the offer.
OTOH, you could have been in a worse mess if only the buyer backed out. Carrying two mortgages, or even just the maintaining expenses, on two properties is no fun.
OTOOH, if your house does sell, and the house you had your eye on is back in the market after your seller backed out, one could re-offer at a lower price. That would be a bit of hardball with the seller, but if it stays on the market I would be inclined to teach them the "a bird in the hand" motto.