I get what you mean - it’s quite “roll your own” rather than “pre-made” - and the same for quite a few of the effects and motion settings.
Note that you can save template versions of effects or motion settings if you need, so after you’ve used it a while, you might have a reasonable library of things you need - but you’re right, there’s a bit of a lack of “drop in, ready to go”, particularly for quick titles.
Something like a “jiggly funky colourful text shaking about” effect can be a day’s work, rather than a 2 minute “write your own text with this pre-made sequence”.
Just in case they’re useful, there are a set of downloadable templates Kdenlive downloadable titles here, but I’m not sure it’s quite going to cover what you’re after - but worth a browse in case.