Dead bedroom

My relationship has turned into a dead bedroom. I think I need to confront the situation again head on and then if things don't improve drastically within 2 months I'll move on. I feel used for my salary and if my gf got her way we'd marry have 1-2 kids and then have no sex again effectively. She says things like but we're not having a child so why have sex or blames not being sexual on being Japanese BUT at the start of our relationship we were both very sexual active together. It's possible that the years where we saw each other for 6-8 weeks a year will have had more sex than 2020. In 2020 she was laid off temporarily so we had so much time together and I worked from home for 2 months and now she's back working part-time and I work from home every other week.

I know a new relationship takes a lot of work and I could regret throwing away this but I only live once and want to be as happy as possible. Maybe I'm selfish but I'm carrying the relationship financially, working more hours and I'm more mentally stable and patient than her. She's a pscycho about some things, like putting things in one place and not somewhere else and she's very controlling.

Her sister got married 3 years ago and had a kid and the marriage failed due to the husband cheating. I reckon if my gf sister withheld sex then it was a loveless marriage doomed to fail. It is a red flag to me. If a girls parents or family members have a broken marriage it's often not a good sign