My strategy is if am not the first bidder and qualifying as a leader then I wait until the last second and bid.

The best time to bid for me is in early morning before I go to work I can take a look on the market and see which players are available and tailor my needs and hopefully noone wakes up until I sign the player

The most important thing in bidding is you put a limit for you that you shouldn't exceed like 8T at most for this player no more cause you can meet crazy players who just bid until the last minute of their life

Usually I make my bids in the beginning of the season and sometimes in the middle in case I find a player is useless in my squad or performing always bad

That's it