Any devs here started freelancing?

Got no kids so I got lots of time haha. Looked into resources for and Im just wondering:

Q1) How did you guys find your clients? Linkedin, upwork, local buisness and searching if they need a site, etc?

Q2) Do you guys get burned out? since you are basically tackling more then your job now

Q3) How "stable" is it? do you continously need to find clients or do clients come to you now?