I'm in the US, my life insurance is through my employer. Mine states that it does not payout on suicide until it has been in effect for 2 years. If I change its conditions at any point, which includes increasing its payout cost, then the timer resets since it's a new contract term. This is why I'm waiting until May 2025.
That being said, insurance companies hate having to pay money. They will always do everything they can to deny a claim or pay as little as possible (in the case of suicide they may say you did not properly disclose your conditions). If you don't have insurance yet, you aren't really going to find one that will pay without a waiting period, and if you do it will be very little. Life insurance companies can also deny policy for conditions which may include previous ctb attempts.