As far as I can see you don't understand the basic principle of supply and demand. Bitcoin demand has been growing since its inception, with some ups and downs, but over the long term it has clearly grown. If demand remains constant or increases, which is what will continue to happen for the next few years, and supply decreases, the price increases.
Demand is higher in bull market than in bear market but bull market is shorter than bear market. The growth of Bitcoin is very solid if we look how it became stronger after past three bear markets. New all time highs are great but even in bear markets, the latter one shows bigger trading volume and Bitcoin communities did not stop growing even in bear market.
Halving reduces supply. Therefore, Bitcoiners expect the price to continue to rise, albeit with volatility because this is not a straight line.
Total supply does not change, halving does not change it. Halving only reduces future supply that is remaining bitcoins can be mined by miners. With less future supply and expected bigger demand when Bitcoin adoption will be bigger in future, people speculate that Bitcoin will continue to make its new all time highs.