The button to move to the right side is not working for me and instead of moving right I start to break blocks if i hold it or if I click it once it places the block I hold or I use the item I have in my hand

When I click the right button to move to the right side I instead break blocks if I hold it or I place or use the item I have in my hand if I click it once and it has made moving difficult.Do check this out and if you can fix it in a week or two please do because it has ruined the simplest thing which is moving. I don't know if anyone else is having the same issue but if they are please fix this.Sorry for not a good proof but you can check my channel on Friday which is Creepercraft with 9 subs and you can get further proof there.