I had the same problem and I can say: Forget willpower. Assume you don't have it. Read the book Willpower or BJ Fog's work if you want to learn more.
I tried everything I could and would often bypass my own security measures that I had previously created to prevent myself from using those sites/apps. I know, it's ridiculous.
Given that, I was able to create a safe phone. Here is what I did:
1 - Install LineageOS Android. Go to lineageos.org and choose a compatbile phone that you like.
2 - Choose the minimal distribution. No Gmail. No Youtube. I chose the one that comes only with Google Play Store. There is a distribution that doesn't have Google Play and you need to download and install APKs manually.
3 - I rooted my phone so that I could change file /etc/hosts and block sites that I don't want to use. That could be a problem to you because some banking apps don't work in rooted devices, but you may try to unroot after you change /etc/hosts or use Magisk.
With that the only way I know I could access these sites would be installing a VPN or using Tor browser. But then you have some effort and you created a considerable space. And as Victor Frankl said:
“Between stimulus and response there is a space. In that space is our power to choose our response. In our response lies our growth and our freedom.”
I tried everything I could and would often bypass my own security measures that I had previously created to prevent myself from using those sites/apps. I know, it's ridiculous.
Given that, I was able to create a safe phone. Here is what I did:
1 - Install LineageOS Android. Go to lineageos.org and choose a compatbile phone that you like.
2 - Choose the minimal distribution. No Gmail. No Youtube. I chose the one that comes only with Google Play Store. There is a distribution that doesn't have Google Play and you need to download and install APKs manually.
3 - I rooted my phone so that I could change file /etc/hosts and block sites that I don't want to use. That could be a problem to you because some banking apps don't work in rooted devices, but you may try to unroot after you change /etc/hosts or use Magisk.
With that the only way I know I could access these sites would be installing a VPN or using Tor browser. But then you have some effort and you created a considerable space. And as Victor Frankl said: “Between stimulus and response there is a space. In that space is our power to choose our response. In our response lies our growth and our freedom.”