wa alaykum salam,
1. Criticism of an Islamic empire needs to be accompanied by fatwas, and not just isolated fatwas (i.e. a handful of scholars), but a large following, a consensus for example. You yourself are not allowed to interpret historical events, the kafirs manipulate history to portray themselves as good and others as evil for example.
2. Regarding this specific empire you're talking about, I have not seen any evidence that they allowed homosexuality to prevail, where did you get this information? I will not accept "evidence" from disbelieving sources, only fatwas.
3. Pressuring people to convert to Islam is absolutely fine in Islam and there's nothing wrong with it, jizya tax itself is a type of pressure on the kafirs to pressure them into converting. I myself became a Sunni Muslim from said pressure, Alhamdullilah.
Allah's Messenger (s) said that Allah aza wa jal wonders about those who enter Jannah in chains, i.e. the slaves who believed in Allah after said pressure.
So that is absolutely fine in Islam even if you don't like it, EVEN IF YOU HATE IT, it is absolutely fine in Islam to pressure kafirs to become Muslim and leave behind falsehood, as they pressure us Muslims to leave the truth that is Islam in all four corners of the Earth.
Regarding #2, this is vague, as women are part of the war booty after conquests and a reward for the Mujahideen for their heroic efforts as stated in the Noble Quran, they and the disbelieving people who fought against us become property, slaves, and this is not viewed as kidnapping.
Regarding yoru #4, wearing jewelry is absolutely fine in Islam, it is only forbidden for men tow ear gold, women can wear jewelry so long as it isn't in haram areas like belly piercings or tongue piercings for example, and that's fine.
In any case, you need to present evidence for all these cases, as well as fatwas to back up any case.
3. To say that a disbelieving nation, such as a British Empire which has invaded Muslim territories, colonized Muslim lands and forced their false Christianity on the people, is better than any single Muslim nation no matter how oppressive and evil it is, is absolutely ignorant on your part.
The British empire was a scourge to the Ummah from day 1, they funded pirates to kidnap and rape women in the middle ages, they invaded Musllim lands in the 21st century such as Iraq and Afghanistan for example, and Syria. They are a crusader nation. My advice to you is, don't get brainwashed by your own country into thinking they are the good guys, they aren't. Allah says in the Quran that if he sensed any good in them (i.e. faith) then he would have guided them.