Female Solo Traveler Looking for Recs

Hi! I’m a female traveler in my 30s. I’ll be in Bali for the first time in early April for about 7 days (heading there solo after a 10-day trip to Vietnam with friends).

Would love to start the trip off in Ubud for 3-4 nights to do yoga, hike Mt. Batur, see temples, get massages, etc. but after that I was thinking of relocating to either Seminyak or Canggu.

So my specific questions are:

1. Is 7 days sufficient for my intro to Bali?

2. What are some good hotels to stay in Ubud? (Budget maybe $150 USD/night or a little more) I want to be close to the city center & have the ability to socialize at/around my hotel, but still feel like I’m in a quiet, relaxing environment

3. Where should I go after Ubud and why?

I’m not big on drinking or clubbing but I would love to socialize/meet other people ranging from their late 20s to early 40s. Open to beach clubs, etc. during the day. All input welcome :)