2 Belgian news sources in English, so aimed at foreigners: https://www.brusselstimes.com/
https://www.vrt.be/vrtnws/en/ (Flemish government broadcasting agency)
Rtbf, the Belgian french broadcasting agency, only has news in french.
If you want more Belgian news, then you could try opening them with a translator. If it works. https://apache-be.translate.goog/?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=wapp
I like the documentaries from apache (independent website) and Pano (Flemish tv documentaries, so I have no idea how you would translate this). They are fact based and critical, which now is apparently considered "leftist", so maybe this is what you are after. https://apache.be/ https://www.vrt.be/vrtmax/a-z/pano/
Hln.be is the most popular Flemish news site + paper. Populist and centre right, fairly far to the right probably. The comment sections on the site are often unhinged, but good if you want to get a taste of what some Flemish people are thinking.
RTL.be is the same thing in Wallonia (same owner even after an acquisition), but I think it's relatively less popular.
Some other news sites from the top of my head: De Standaard (center right + elitist = culture snobs, I know, I read it daily for the longest time). Het nieuwsblad (same news as De Standaard, but less words, same owner). De Tijd (center right, with an emphasis on money).
Most (according to RTL all) old walloon news papers were saved with money from the walloon government and are rumored to have lost their independence. But I don't know myself, I only ever read one incidentally when passing through.
I doubt that any evidence will ever be enough for republicans, I expect that they would just move the red line again, they know that Putin's Russia is their ally too.
I can only see evidence that is really salacious or visceral work, something like Russia's 1980s kompromat on Trump for example. Everything else would need a bit of explaining and the right wing media would then be able to muddle it.
Trump's presidency was such a travesty, that without Roger Alles successful transformation of the media landscape, no other politician could have been seen to support Trump. But since Roger Ailes media plan has been brought to fruition, republicans know that facts are now optional.