Some articles I've written on this topic
https://medium.com/long-after-the-thrill/why-she-wont-have-sex-with-you-anymore-1a7b8a8b295e
https://medium.com/long-after-the-thrill/there-is-no-such-thing-as-withholding-sex-be520aae3dde
https://medium.com/long-after-the-thrill/what-does-connection-even-mean-3697579baeb5
https://medium.com/long-after-the-thrill/youll-have-to-do-it-when-she-s-gone-0306ce966d53
https://medium.com/long-after-the-thrill/the-only-relationship-advice-youll-ever-need-b528b27acae6
https://medium.com/long-after-the-thrill/lingerie-is-a-terrible-gift-767e91ed9831
I also recommend reading The Seven Principles for Making Marriage Work by John Gottman
as well as
How to Improve your Marriage Without Talking about it by Patricia Love and Steven Stosny.
If you're actually interested in finding connection in your relationship you will do the work - and the work does not include pressuring her to have sex with you, using thinly veiled attempts at connection.