It’s not so simple because a bridge can have a positive or negative output. This depends on the direction of deflection and the orientation of the connections. The larger issue is that an Arduino cannot handle a negative input voltage which will occur in 50% of your use cases.
The simplest solution is to use the HX711 strain gauge amplifier as its output is digital, not analog. This chip is the most common way to interface a strain gauge with an Arduino. A quick google search will lead you to suppliers (vast and cheap) and the required Arduino libraries.