I'll be looking to sell some of my portfolio in the next few years and I'd like to hear how the process went for others here?

The businesses I'll ultimately want to sell in 2025/2026 include:
1) A property services business that does gutter cleaning, snow removal, pressure washing of townhouse/ low rise apartment complexes. Revenue ~$1 million CAD and EBITDA $0.3 million CAD
2) A designer and parts supplier for water features. Mostly working alongside landscape architects on some of the largest residential, commercial and government buildings. Revenue $2 million CAD and EBITDA $0.5 million CAD
3) A safety training and first aid training business. Revenue $7 million and EBITDA $2 million

My business partner on these businesses wants to see what we can do ourselves before hiring a business broker/ M&A advisor. How has your experience been posting on businessforsale.com vs searchfunder.com vs axial.net. Any others that could work before we use a business broker?

Thanks in advance!