I suppose it depends on why you are arguing online.

If the real reason is to challenge your beliefs, you may need to ask if this is consistently happening in the communities you visit and if it isn't, you might need to find better online communities or engage in some practice other than arguing online to challenge your beliefs.

If there are other reasons that arguing online appeals to you, it would be worthwhile to identify them.

Arguing online can be relatively cheap (easy to get into many arguments with a low initial investment and a lowered chance of it affecting your world offline) way to get arguments. However, if you are concerned about the quality of the arguments you are having, it might be worth investing more time into finding good places to argue or abandon arguing online for someplace where the low-hanging fruit is a little higher quality.