You’ve probably got your answer already, but just wanting to confirm that Kdenlive can do all the things you listed.

Though the editor itself is very easy to use and obvious (if you previously have used premiere etc), you might find the UI for some of the individual effects a bit confusing. There’s tool tips and sometimes help videos and stuff, but you might find yourself dragging a few sliders left and right to find out what they actually do :)

Note that generally speaking, Kdenlive doesn’t currently support graphics-card-accelerated timeline preview very well, so if you’re packing on the effects, you might not get real-time playback in the timeline without “preview rendering”. If you ever used Premiere 20 years ago, it works the same as that.

From memory, Olive has the best “in-timeline” graphics card acceleration - but is otherwise at a much earlier stage of development.

As others have mentioned, some or all of these are also doable in Shotcut, Openshot, Olive.

Also, you might be interested in TJFree Tutorials on YouTube, which has a playlist of Kdenlive tutorials - for older versions, but it’s mostly going to be the same. He also has tutorials in loads of other FOSS creative software. I found he tended to be “clear and efficient” and doesn’t take 5 minutes to give you 1 minute’s information.