Can’t put it in

I’m a virgin but I have a dildo (vibrator) that I like to use once in a while (well at least try). I decided to use it recently and I tried everything but it can’t go in. I used my fingers first to stretch myself out; one, then two, then three, but when it comes time to putting the dildo in it burns and hurts like a mf. I’ve never had sex so I know it can’t be an STI or anything of the sort. And yes, I used A LOT of lube but it still won’t go in. Is it because I’m too tight? Has this happened to any of you when it comes to using toys for the first time or even the real thing? I’m so stressed out about it because I really want to know what it’s like to orgasm this way and I get so upset at it that my whole mood just goes away and I give up on pleasuring myself for the night 😣