Bike Reviews

I found a shock absorber from a mountain bike one day and tried to put it on my mountain bike with a plain fork. It didn’t fit because the bar on the shock absorber was too thick to go through the hole in the frame of my mountain bike. Is it like this with all bikes without shock absorbers?

I rode a Cannondale f7 and a Trek 7.2FX. I like how easy the Trek was, but when turning I hit some sand and the back tire slid. On the Cannondale mountain bike I hit the same sand and was fine, but it is much harder to get the bike going. Just not sure what to buy.