Bear or bearish market affects all coins with no exemptions unless in the case of stablecoins. Also, bear market affecting all coins isn't the issue because that's the nature of the crypto space, that is, there is bear market and bull market but what matters in my own opinion is, after the bear market, what next? This question is very important and if you can't find the answer in any project experiencing a bear market, then there is no need investing or holding. Taking a look at top coins, it can be seen that after bear market, they always try as much as possible to regain their growth, this is what really matters. But in the case of most newer altcoins, bear market might give the team an opportunity to slowly abandon the project or exit scam.
Lastly, Tezos is already known as one of the top altcoins, so irrespective of the bearish market it is experiencing, it always regains its value.