best online casino if you want to test every game thoroughly free

never understood why most places lock you out of games after a handful of free tries. especially if you want to really test rtp swings, or run some basic stat tracking, it’s kind of pointless if they throw up a "try again later" or push you into deposits after two bonus rounds. almost makes me think they count on people chasing a loss even before any real bets get made.

i’m mostly looking for somewhere you can grind through the slots or live games in demo mode, just to see if the mechanics actually match what’s advertised. figured it’d be nice to map out volatility and bonus frequency before risking anything, but a lot of sites either restrict access or force an account just to play demos.

anyone have a go-to site that lets you dig deep with free mode and not get hassled to sign up?