Howdy, and welcome.
There is no silver bullet for stretching. The only way to gain flexibility is to stretch several times per week, and persevere. It will take months before you see the results.
I do light stretching every day, and it is going slow.
After a couple of months, I feel the difference, but there is still a lot of work to do. I hope to one day be able to do a side split, but for now I am not even closer. I am improving though.
In some directions I am much more flexible. I used to be able to bend over and put my hands flat on the ground. Now I have room left to bend my elbows, and I can touch my knees with my nose.
Don't give up, and eventually you will have success.
Also note that not everybody is built the same way, and as a result may not get the same result. It is possible I will never ever make it to side split. But I can improve what I have.