it's best to look online for teams that fit best depending in who you have, but generally speaking this is a free to play friendly team comp:

nahida, fischl, xingqui, barbara

barbara can really be replaced by anyone who does electro, dendro or hydro of your choice. Yaoyao is a good choice too

she's really good in any team that uses dendro (her skill can apply dendro on multiple enemies & links them together so that enemies all share the damage being done to them) (her burst has a very long range that applies buffs depending on your party member's elements)

reactions with dendro:

dendro + hydro = bloom (makes a little bomb)
bloom + electro = hyperbloom (bomb autotargets enemy)
bloom + pyro = burgeon (huge bomb)

dendro + electro = quicken
quicken + dendro = spread (increase in dendro damage)
quicken + electro = aggravate (increase in electro damage)

she's really good, congrats!