Yes, a miserable lavender. Since you are in Spain get it outdoors asap and either plant it in the ground or put it in a much larger pot with a fast draining gritty mix. Once it's settled it can take full Spanish sun.

You can grow some of the store-bought Asian vegetables. Here are the ones I have grown: 1- lemon Grass: Get the ones with a knokle/clump at the end. Cut it to about 14 inches (throw away the top part), put it in water, keep it in your kitchen, wher it gets ligth. When you see small roots growing, plant them in garden or in a 16" pot, and keep them watered and watch them grow. 2- Chinese celery They usually come with roots. Pick the ones that are fresh and have good roots intact. cut all big leaves off, leaving only the ones in the center. Like Lemon Grass, put them in water and keep them in your kitchen (window sill, indirect sun) When new roots start growing, plant them in garden. 3- Thai basil Pick the freshest one you can find. Pinch all big leaves, leaving only some tiny ones. Treat them just like celery/lemon Grass. 4- Shiso Same as Basils. But leave more leaves on. As I have said, I am speaking of my experience and those are now growing in my garden. O" I have also rooted and planted mints the same way. I am sure there are some other, that I was not interested in growing them.

I would probably try to split them all up, but I'm pretty fussy like that. You might be able to do a half and half split. I wouldn't just leave them in a clump like it is now though- again that might be just me being fussy rather than something necessary.

It appears to be small white flowered Clematis but not virginiana. The foliage is wrong. There are scads of small white flowered species. Clematis terniflora has foliage similar to what is seen in your second picture. https://www.minnesotawildflowers.info/udata/r9ndp23q/white/clematis-virginiana-virgins-bower_0801_110539.jpg