hello brother,
I know it been a hard time for you during this phase of PIED and your partner leaving your side at the same time. But now you have to fight your battle of this war of being healthy again.
It is very obvious that you will have a lot of anxiety due to your breakup and your PIED. and its normal everyone gets it in both the cases so my advice to you will be that during this time of the COVID-19 lockdown you can take care of your own.
Start doing yoga or exercise in the morning or evening so that you get tired and sleep at night.
if you have any plants start taking care of them, just keep your mind busy so that you don't get carried downwards the dark pit of porn that you have managed to climb halfway up.
The fight is long but there is light at the end of this tunnel which is the brightest you have ever seen in your life.
You gotta keep your chin up. This is the battle you want to win to win the war.