Wanna go by statistics? Sure.
Statistics don't and never said that lesbian relationships have the highest rates of abuse. They say that people in lesbian relationships have higher rates of having experienced domestic abuse at some point in their lives.
Recorded statistics indicate that 44% of lesbians and 61% of bisexual women experience abuse by a partner, while straight women have a rate of 35%. One in seven women and one in twenty-five men have been injured by an intimate partner.
If there are two women in a relationship, there will be a higher chance that at least one of them has experienced domestic abuse at some point. The statistics don’t say lesbians are more abusive, but that they’ve been abused more. They also account for abuse committed by men toward lesbians.
This also relates to how people in the LGBTQ+ community are more likely to report abuse than most straight people, in a similar way that people in less conservative communities are more likely to report or take action against abuse than those in conservative communities. While not insanely higher, it's still a bit higher than straight people reporting abuse, especially men, resulting in more reports compared to straight relationships. This means statistics on straight relationships may not be accurate and are likely higher than reported.
Additionally, many lesbians, especially those over the age of 30 or 40, dated men in their earlier years, which also factors into statistics indicating high rates of abuse among lesbians. You looked into statistics, but it seems you didn’t fully read how they were compiled. They aren’t saying that lesbians are more abusive—they are saying that they’ve been abused more, which also includes previous relationships with men before realizing they were lesbian, men trying to "fix" them, etc.
The statistics reflect how lesbians and bisexual women experience violence, but they do not indicate that these groups are perpetuating violence.
While of course there are abusive lesbians, there are also abusive men. But the second someone says this about men, they go ballistic about how it’s "not all men!!" or claim people are "generalizing!!" Yet the second people say the same about the LGBTQ+ community, they’re accused of "hiding the truth!!". There are far more men who abuse women, but you don’t see me going around, shoving it in your face, and saying straight relationships are overwhelmingly abusive because men abuse everyone and all men are abusive, do you? Do you just want no one to date? Is that your goal?
Also, most statistics about "lesbians being more abusive" or "lesbian relationships having more abuse" are really outdated, so much so that they even use "LGB" instead of "LGBT." Many of these studies contain clear flaws in their research methods, with some even appearing biased and coming from a homophobic perspective. When you’re conducting statistics on people you dislike, there’s a risk that bias will seep into the findings, ultimately altering the data.
For example, there were studies that suggested people of colour had lower IQs, only for it to later be revealed that they deliberately excluded high IQ scores to support their biased claims.