Work harassment/ADA violations?

Throwaway because im waiting to meet with a lawyer next week just wanted some advice.

Looking for generic legal info.

Location: New York

About a month ago I started suffering from some over whelming mental issues requiring me to take a few days off. I let my boss know and he okayed what i believe to be Reasonable Accomodations, he said I coukd take time off additionally or even a leave of abscence and was i initially very supportive.

At the same time we would "Friends" we would send eachother funny memes and what not dark but nothing too serious. One day he says I want to send you something but might be bad. Im like Okay how bad can a meme be. He sends me straight hentai porn. I didnt even know what that was untill it was sent and i figured out what it was.

I started to realize he was a creep and started looking for new job. He always told me he was supportive and would help me anyway I needed, so stupidly I put him down as a reference after an Initialy interview. He told me he was happy for me and wished me luck. Cool awsome excelt I was the 2nd choice for the job and didnt get it. I contacted him and told him hey thanks for reference didnt get the job im going to just focus on this job for now and maybe search later.

My superiors found out about me searching for a new job and imediately had my manager have a 1 on 1 with me. Told me I was slacking, need to step up blah blah or let me go. I had up to this point never been written up/had a poor performance review been late or mistreated anyone. I find the timeline odd. I requested a meeting with my boss and two of our superiors. I reiterated my concern of my Diagnosed ADHD/Mental Health and was told im feeling sorry for myself and its not an exscuse. I was never throighout these months offered any true Reasonable acountability and even being offered it by my Boss. When I tried to use it I was quickly shutdown and told no.

My question Is this a violation of ADA?

Is this accurate depiction of sexual harassment?

Could this be Retaliation for participating in a Protected Activity as is contained in Title VII?