I dunno about any VSTs unfortunately, but I advise you to download the sws extension and the osara accessibility adon, to make it much easier to use. SWS adds a lot of shortcuts and stuff that I personally find useful, Osara makes it work well with screen readers, whether it be on windows or mac. It took a real long time for me to get used to it, though. So long that I switched to reaper for 90% of my stuff after using it for a year. It wasn't a quick transition by any means. Also, there is something called Reapack, which has a lot of custome scripts made by the community for certain things. For example it allows me to turn multiple items I may have on a track into a drum machine by putting all the sounds in their separate instance of the built-in sampler plugin and assigning them to a key, when I highlight all the items and find the script in the action list or activate the shortcut key. Once you have it set up to do what you wanna do is great.

well, if anyone knows where to get virtual instruments like piano and violin and stuff like that, may someone please direct me to them