No one likes to play a competitive shooter with a high ping, especially when they normally have a strong connection to the game servers. It might sound silly to some, but tournaments are played over LAN for a reason, and the ping can be a huge factor for some gamers.
The first thing to do is understand that ping issues cannot always be fixed. Depending on your internet connection, time of day, and day of the week, your ping may be a bit higher due to many other people using the internet in your area.
You should also check if increased ping for gamers is a known issue at the time you encounter it. If it's on Valorant servers, you can check the server status page and check the Twitter page to see if developer Riot Games has announced a possible issue.
If you've noticed a dramatic increase in ping and a subsequent reduction in game connection quality, there might even be an ongoing problem with your own internet connection that your ISP needs to fix.
If your ping is consistently high for every game you play, then the problem is more than likely your connection, and a line upgrade or router upgrade may be required. Depending on where you live, this can be solved by changing your ISP, so be sure to shop around for different services in your area to see which offers the best deal.
The last thing you need to check is who else is using the same interconnect as you and what they are doing. Too much information going in or out of the line will impact your connection to the game, but solving this problem can be trickier, depending on your household.