Bitcoin moves up more sustainably if you look at its Yearly Lowest Price chart, only a fluctuation between year 2021 and 2022, while for other years, the trend is upward smoothly.

It's different with lot of ups and downs if you look at Bitcoin Yearly Highest Price. This chart looks to have pattern of cycle while the first chart is more parabolic.
That's what I meant by plotting two charts attached in OP.

Since your presentation is about yearly lows, the 2025 data is not necessary for analysis to predict the yearly low and high this year. However, since you have already included it, and since I’m bullish this year and expecting another major Bitcoin bull run, my conservative prediction is that Bitcoin will hit $300K. If that happens, the yearly low of $78K (300k x 26 ^{based on computation below}) might already be in, meaning what we’ve seen this year could be the bottom.

2024 - 108086 - high less 2024 38598 = total over high+ low = 26

Yes I can, and here you go.  

I know and we all know that 2025 year has not completed yet, and different people can think differently about Bitcoin trend and price within this year. Nobody know what are Highest and Lowest prices in 2025, before its last day.

I only add 2025 year for a raw comparison but it's clearly that we will have better one on 1 January 2026 with full price data in 2025.

I think so too but make sure you have your withdrawal plans if you don't plan to hold your bitcoin for one or two more cycles.
Are you ready for the Bitcoin bull market? What's your plan? Some ideas for you

From the chart Bitcoin highs in 2024 and that of 3025 are almost on the same level. And the year after a significant event in the bitcoin space price of Bitcoin tend to suffer loss until another event takes place which is usually the bull run. There is no assurance of price recovering if we closely interpret this chart carefully without sentiments.

I also understand this more better when it comes to having a long time investment plan to do, then it is mostly effective for us to consider, because we have not yet arrived at this year 2025 lowest of all time yet and same as high, but with the little we already have starting from the first day of the year to where we are now, it could also profit us if we could mildly go for a quarterly plan to be able to fit in on any of the above high and low for a market entry point especially when we get bearish, one can invest and speculate more before the market rises within a particular range.