I would like to suggest adding verbs to ‘view card’/review explanation when you’ve made a mistake so you can see why you’ve made that mistake and learn from that.
For example, I knew the verb was hacer (to do) but not the conjugation:
I would have been very helpful to see the explanation about the verb, hacer:
I - hago
tú - haces
él/ella/ud. - hace
nosotros - hacemos
vosotros - haceís
ellos/ellas/uds. - hacen
Or a list of verbs on your course page so you can check it out and practice after the exercise. Especially helpful for the verbs which are changing like dormir - duermo etc.