You are not being judged, but your thinking is skewed.
You are in a supposed abusive relationship, you need to deal with that first and foremost.
You want an affair so that you can carry on in the abusive relationship, which perpetuates your own children being directly abused too btw.
This is a sexual version of Anit-depressants/Tranquillisers. Medication to enable you to Shut Up and Get On With It, but in this case you want to 'use' another person, a bloke.
You don't have female friends, your H won't let you.
Who the hell does he think he is? Sort HIM out, or KICK him out, or better yet, get yourself down to the CAB and find out what help you can get in the way of benefits etc. You may be pleasantly surprised.
So if you do find a magic bloke to offload to, what happens when you go back home? what will make your X more bearable? NOTHING.
In fact, the minute you find a willing fuck-buddy, the more you will resent your abusive H. He'll spot it from a mile off too.
Slow down love. Your happy day will come, but not until you free yourself and your DC from his abuse.