I started doing language exchanges in my early 20s so I would put up a note in the English department in Spain or Spanish department in the UK at the local University. Maybe now in my 50s I would have more in common with someone a bit older hahaha so depends how old you are. Otherwise you could try a language school. I have always just exchanged with one person and organized it myself. Maybe you could try putting a notice up at a local language school so you could find native Spanish speakers. I have used this method with Spanish, Basque and French and it really helped. I have never used organized language exchanges but I think they work. Also if you can get Spanish TV try to find a series you like and follow that. It will be tough but you will get small chunks of dialogue and you can set dialogues to be sub-titled in Spanish. My sister is learning Spanish from zero and she watches this series: https://www.mitele.es/series-online/la-que-se-avecina/0000000003580/. Not my cup of tea but each to his own. Good Luck! Just take the learning process one step at a time, there will be good days and bad days!
That show looks so Spanish. That's the problem with Spanish TV; so much of it's crap. Lot's of good films though.
Don't suppose you have any recommendations for series?