Lou.
For someone who claims to be clean. You doth protest too much.
People would probably engage with you more and listen to you if you admit the truth.
Relapse is unfortunately part of drug recovery, no recovery journey is faultless . Its how you mitigate your triggers moving forward. You stand zero chance of every being near your kids like this, so I implore you as a recovered user myself, just be honest, addicts lie, they lie all the time and it's a big thing to be truthful.
Also you are putting all your "dirty laundry" on an open public site, a site anyone can view even if you block them via 3rd party viewer sites. You are living your life online, so of course people will give their two pennies worth on here and on Instagram and tattle etc, any legal person or police would advise you not to put everything online because it leaves you open to abuse and also services that protect your children can use all this as evidence.
Also in a recovery hostel ,I assume it actually part of your tenancy that you should keep your location secret to protect yourself and future users of the property.
Put the phone down, visit your doctor, admit you've relapsed and possibly look at in patient rehab or further support from a mental health team. Leave ste and fight.....you are a mother ...FIGHT for those kids with every ounce you have.
Trust me children of addicts often have severe issues themselves. I'm a kid of an addict, I was an addict, I can't have children myself due to non addiction related issues but I see people like you taking a blessing for granted and I can't help but be annoyed.