If you don't mind me asking, how many more opportunities came from Linkedin? Last time I was looking, I was getting about 2 new interviews per week from sending my resume through Indeed and about 1 interview per month from Linkedin.
In the Bay area, I passively get at least two recruiter reach outs per week and when I was set to actively looking, it was more like several per day. Some of them are highly targeted. For example, I've had a company reach out recently based on previous distributed column store experience.
Triplebyte is also pretty good, although it's heavily skewed towards startups.
Both of those options are pretty high return on little investment (a few hours).