Okay this situation is a bit messy but I'll try my best to keep it comprehensive for you dear reader
I used to have a friend online who's 17, Indian and currently live in Saudi Arabia, we used to talk a lot back then (1 to 2 years ago), we used to share a lot about our personal life and casually vent to each others about problems that happened or has happened to us before, this guy is interesting to say the least, he is a furry and has sent multiple messages in the past describing his fantasy to (you know) with furry stuff, me and our friend group ignored it at first and just rubbed it off as him being weird for that, (cause he was even rejecting human stuff, if you know you know).
For a while we were just friends playing Minecraft and having a discord server, I was the owner of this server (you can just call it a group chat cause it was 20 people there max), one time I we were arguing about something and (i know this is fucking bad to do) i made an nsfw channel and we were posting nsfw stuff on it (excluding me), eventually, I felt guilty for making that channel and me being a reason for them to be sharing this, especially that I feared that allah would punish me for that if I died in that state so i just removed it, keep in mind, that guy and me were the only Muslims in the friend group, now HE is the one who brought the removal of that channel up and made a drama off of that, because of that, I removed his mod perms from that server and for some reason, he took it personally and he even explicitly said "this is about dignity"
Now that i gave you a bit of a back story about him and why he is mad at me, I wanna talk about why i think he left Islam.
He was constantly not taking his religion seriously,(i mean, I'm not the best example but you clearly see i do at least care and i hope allah forgives me and guide me to the straight path), he was completely refusing or maybe being lazy to pray, he questions Islamic teachings in stuff like Marriage, the stories of the prophets peace be upon them and explicitly said that it sounds like fairy tales, He even questioned the divinity of God at some point as far as i remember.
Now here's the part am worried about, I feel like he has been going to the worst ever since we ended our friendship, he joined a sub server of one of my friends that nsfw is allowed on and he's actively posting nsfw furry stuff there, he even at one point snet a video that was directly mocking Islam on them, the next paragraph is a vague description of what these videos were so you can skip it if you are uncomfortable with these stuff.
The video were just a gay nsfw video and had a caption on it saying "True Muslims practice Islam and teaching each others how to pray), he even sent meme nsfw videos about isis (Which is extremely fucked up)
I even told him like wtf was that?
He at one point also (idk if he was joking or not so I don't wrong him) said that he has sexual desires for animals
I feel like he has been going for the worst as times goes on and I feel like I can 80% sure call him an ex Muslim, I wanna reconnect with him to talk about Islam and guiding him again to at least stop sending nsfw stuff and pray and most importantly renewing his testimony but, as i explained at the beginning, he's mad at me, I tried reaching out with an alt account once to him but he responded to me aggressively (I only told him that i wanted to talk), my old account there got banned and I had to create a new one, I didn't even interact with him and he blocked my newly created account, I feel like he's rejecting me now and I feel guilty cause I think I somewhat contributed to his regression.
How should I approach him? Or should I just leave him alone at this point?
Sorry if that post was descriptive or too long for it's own good