Everything is possible but if I am correct one difference is that the max loan for rental properties here is 75%, and this is subject to rent covering interest at a 5% stress test rate. Not easy to find when market rents are 2.5%.
Second difference is the huge purchase price /notaire taxes. Those Youtubers in US might be able to buy a house for 100k, spend 40k to rennovate, and (re)mortgage based on 160k value. Nice % return in 6 months.
Equivalent here might be: buy a house for min 800k, spend 60k on rennovation, if lucky market value will be 900k. That might just about cover your notaire tax to get you to break even, depending on the canton. Then if you try to remortgage the bank is unlikely to spend much effort on such a small relative increase in a short time period. In our experience one asked to see invoices (so would have valued at 860 in the above example)
Exception might be if you are able to add livable m2 - for that you need to go through planning permission etc.