Hey Raymond,
I wouldn't have gotten as far as I have without blockers so it's a great step for you. However realise that blockers aren't 100% foolproof, they are however great ways to slow down urges and realise what you're getting yourself into.
I've been using Norton Family, it's 60 euros a year for up to 5 (mobile) devices. It helped me a lot, my wife has the 'parent' account and she can monitor whatever I do on my phone, laptop or whatever I use. Additionally I have enabled Google SafeSearch and restricted mode. This means that I really don't have any access to any form of pornography or other visual stimulation. I've heard many people having a lot of succes with Covenant Eyes as well. It's also an accountability software and it send random screenshots to your accountability partner. Apps that are helpful are BlockerX, Blocksite and Appblock. If you're using Google Chrome, you can also set up parental controls on your Google account that'll help you. If you're dedicated enough, create a fake parent account to set up the parental controls, and use some impossible to remember password that you're not writing down anywhere like UIFESLUFNdsnfre8493t49joerlsd or whatever your creativity comes up with!
With many blockers you'd really need some accountability partner, I don't know if you have one but it would be really helpful to let someone in on your struggle. I'd advice getting some paid service to block content, it makes you more invested into quiting since else you're just throwing your money away.
All the best of luck!