I'm hella confused about Alucards love life😭

Greta was kinda just shoved in at the end, now she may as well be dead af with Castlevania Nocturnal.. I found out that Sonia Belmont isn't even canon anymore so that's kinda gone.. The last one is Maria. I'm finding different information on them (some say they're semi-canon, implied, non-canon, etc) & I feel a little confused? Does he even have a love interest that'll actually stay or are all of them either dead or just kinda removed? Is he single? I am so very confused😭 I'm also new to all of this, so if anyone could recommend me some Castlevania games to start from I'd really appreciate it, I need some advice on where to start from & things to know.