Will using a thick dildo make my vagina looser? And make it feel different for a guy?

Extremely paranoid over this right now. I just bought a dildo that cost over 100 dollars and it's pretty thick, my very first dildo. It's thicker than any of the guys I've been with and kinda hurt to try and push in, even when I was loose and wet and used lube.

I talked about this with someone and they said that it'll loosen my vagina and make it less pleasurable for men.

I'm paranoid to use my dildo at all now and I can't seem to find any good genuine scientific studies on it either way.

I googled it and found some reddit posts, and one got quite a few comments saying it wouldn't change it and stuff but there was this one comment that stuck out to me and has me really worried now, that nobody replied to or said anything about.

https://www.reddit.com/r/sex/s/SBJgXTPlPk

Sorry for the rant, I feel really paranoid and unwell now.