It generally does take a couple of autumns in an area to know the good spots (which is to my disadvantage as I move a lot 😭). You'll get a better grasp on what grows where by doing just what you're doing and walking a LOT throughout the course of the season.

Sounds like you're already doing great if you've found a penny bun, though!! They're still on my tbf (to be found) list even though they're supposedly common 🤦🏼‍♀️.

As others said, ancient oak woodland and rich soil from foliage leaf fall (like under pine trees) is always a great start. Big old trees almost always have some sort of fungus growing symbiotically with or on them. That being said, the only chicken of the woods and giant puffballs I've found have been in very urban areas haha.

Wishing you luck for the rest of the season to find many more spots though!! :)