Get yourself a decent balljoint separator tool. Having decent tools makes all the difference in the world when working on your car. Check to see if perhaps your area have a DIY garage with tools and lift that they will rent out to you. In my neck of the wood there two DIYer shops.

Here's a short video on how to remove the thrust arm from the ball joint at the knuckle.

https://www.youtube.com/watch?v=7_ekrGlb6To

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2006 Infiniti G35
2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD
Lotus Europa 1970 Destroyed by fire
Lotus Europa 1970 S2 Renault Powered
Lotus Type 52 1970 Twincam Webers Powered
PORSCHE 911 Targa 1982 The Garage Queen
Audi Avant donated to Kars for Kids
BMW 525IT Sold
Audi 4000CS Quattro Sold
Jensen Healey Lotus Powered Sold
Opel 1900 Sold
Triumph Spitfire 1971 Sold
Triumph Spitfire 1968 Sold
Plymouth "Cuda" 340 Six pack SOLD