This thread is moving so fast!
@Gettingannoyednow Bottom line is if you don't know for sure, avoid.
I grew up with some idea of what was 'free food' and some idea around what was a bad idea and what had 'interesting' uses, but I'm no expert, just know some things.
The saying here is that "everything can be eaten, but some things only once."
Also " eat nothing grown on conifer or yew, even though some will, can, and do."
The smaller pics could be many things, and I wouldn't hazard a guess without seeing the gills on the underside and stalk.
The big pic is almost certainly one of the many types of ink caps, some are edible, some not, but to identify safely you need to be able to see not only the underside but also the join between stem and head, and any 'skirt' on the top of the stem. Smell can tell you a lot, as does where is it growing and what's growing around it. It's a balance of 'evidence' generally.
If you pluck one and it dissolves into mush overnight then it's an inkcap and generally* best used for drawing. (boil it up with cloves or back in the day; urine, for permanence.) All inkcaps deliquesce at around 48 hours, so if it's still with you after that, it's not in that group.
Many but not all inkcaps contain a substance incompatible with alcohol (including up to 48 hours either side) which used to be used as method of controlling alcoholism by 'wise women' in the know, those are also known as Tipplers Bane. They're theoretically fine to eat if no alcohol in the system, but will cause vomiting and the world's worst headache for hours if there is, but actually do no permanent harm. But, some inkcaps are considered to have chemicals now considered potentially carcinogenic, whilst others are really nutritious, but another general rule is none should be eaten raw.
*Shaggy inkcaps are the only inkcaps I'd suggest are relatively easy to safely identify and eat. They are pale finger length cylindrical 'lollipops' with shaggy 'scales' and smell sweet and earthy when young. Best when the gills are pink and they haven't started to develop a dark ring at the base or 'bell out', but still edible when black.
They're very easy to spot and the only inedible thing they're similar to in the UK, are Magpie inkcaps. The Shaggy has a white head with white scales, the Magpie a black head with white scales.
Young Shaggy's can be gently sauteed in olive oil or butter and draped with small amounts off very thinly sliced mild cheese and go really well with young asparagus, or make a umami sauce if a little older, but their flavor is delicate, earthy and very easily swamped.
As with all wild grown food crop conservatively, unless there's literally loads.
Worth remembering mushrooms and fungi are the visible flowers of a much bigger organism underneath or inside, many of which have incredibly useful but also often poisonous chemicals going on.
Some people are allergic to commonly edible wild mushrooms and fungus, so always advisable to try a very small amount if you've not eaten something before. Any odd pins and needles or stinging in mouth or lips, stop.