I was in your shoes.  Exactly at the same point and I agree year 2 was worse than year 1.  
I still had my very excellent therapist so that saved me from my snide sarcastic side coming out. 
And I could see my H was doing everything possible to make amends. 
But I was drowning.  And miserable. And like you I questioned if he loved me so damn much why was he planning to kick me to the curb and do it in such a mean underhanded sneaky way?  
You have to stop and tell yourself this - you CANNOT make sense out of irrational behavior. Stop trying. 
I think I expected my H to be apologizing every damn day for the rest of his existence.  And when he stopped I was unsure if he really understood the trauma he caused me. I know NOW (12 years later he really gets that aspect) but I wasn’t sure he understood it 2 years or 3 years after dday2. 
To reference a post in another thread, there are so many layers in healing.  Some people are healed (I’m not saying fully healed but there has been healing) to the point that 1 year after Dday things are better.  
And then there are people who things are not better 2 years after Dday in terms of healing. 
How did I get myself out of the rut?  How did I stop thinking and waiting to feel better?  How did I move on?
First I realized (3 years sfter Dday) that I had to heal myself.  I had to change my thinking.  I had to just really let a lot of the crap go. 
Why?  Because the more I remained stuck in the past the more the OW got what she wanted.  The more unhappy I was the more I was letting the cheaters "win".  
Second, I started putting myself first.  I started a business.  A side business for me - which was pretty successful.  Covid caused it to shut down but I then started my current company.  Even more successful. I took on the challenge for me. 
Third - I stopped worrying about the marriage, his happiness etc. and started putting that energy into my life.  
It took me another year but I can honestly say it was worth it.  I healed and in year 4 after Dday I was much much happier than I had been. 
If your H is doing everything he can to make amends, sadly the rest is on you.  
It took me until year 6 to forgive my H b/c he was planning to D me, and that’s more than just an affair.  I was being kicked to the curb for the much younger OW.  Funny how the two or three times I told him he could go and be with her b/c the marriage was over, he begged me to reconcile.  
Only to have him continue to cheat.  
Hope this helps you.