Where? The world is a big place.
Short answer, conferences are not that useful unless you are on a panel/speaking etc. Recommend you focus on building grass roots. Conferences can be a part of it, but how you do conferences matters, otherwise is an expensive use of cash.
There are many zoom conferences you can attend! I would recommend the Harvard and MIT LATAM conference done by the Harvard business club. I have attended physically many times and I always manage to learn a lot. Its has a very good price at 20-40$ and it includes a full day pass