Class war is a matter of fact in the societies we all live in whether you want to acknowledge it or not. That can be attested to by people who have died from homelessness and hunger as a result of the exclusion of housing by people who have more money than them (landlords), by Indians who died in famines perpetrated by the capitalist British, by Indonesian communists who were murdered en masse by the authoritarian capitalist regime in that country supported by the United States (or in Korea, Vietnam, Latin America…), etc. etc. and over cases from centuries ago during the Atlantic slave trade up to exploitation and war under today’s neoliberalism.
When the interests of capitalists and landlords uphold a system that privileges them and murders countless people whom it exploits and excludes from even what they need to survive, that system is already violent against people that you implicitly don’t care about, regardless of whether it makes you uncomfortable to be aware of that violence.
edit:
To add on, this way of comparing “death tolls” under communism and Nazism is a classic tactic of neo-Nazi apologia and soft holocaust denial whether you intend it that way or are credulously repeating it. If you follow this line of thinking you end up at a point where, as one of the main goals of the Nazis was the eradication of communism and the Soviet Union (along with Jewish people and other groups), they really weren’t all that bad since they were trying to stop a greater evil (and indeed, you are explicitly minimizing Nazism next to communism in your post). I encourage anyone interested to read more about The Black Book of Communism that you cite and academic criticisms of it, since it deliberately exaggerates and imagines deaths under communist states in order to reach its figure of one hundred million and support this sort of comparison.
No, having a job isn’t remotely the same thing as a corporation / capitalist being driven by the profit motive - in the latter case profit is extracted from the labour of the people with jobs. And your friends, family, coworkers, or the bar you go to generally don’t have a financial incentive in making sure that you remain romantically unsatisfied, or absolute control over the social circle you’re exposed to; in contrast a successful long term monogamous relationship is literally a bad thing from the perspective of the shareholders of a dating app (in the same way that social media sites like Facebook basically make a business model out of addiction).